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Finding the Fourth Proportional to 524,123.40, 786,185.10 and 398,152.20

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Solution

The fourth proportional to 524,123.40, 786,185.10 and 398,152.20 is: 597,228.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,123.40 : 786,185.10 = 398,152.20 : x
  2. Step 2: Convert to fraction form
    524,123.40/786,185.10 = 398,152.20/x
  3. Step 3: Cross multiply
    524,123.40x = 786,185.10 × 398,152.20
  4. Step 4: Simplify right side
    524,123.40x = 313,021,327,172.22
  5. Step 5: Solve for x
    x = 313,021,327,172.22/524,123.40
  6. Step 6: Final answer
    x = 597,228.30

Related Problems

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Half scale
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Double scale
Find fourth proportional to 524,124.40, 786,186.60 and 398,153.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.