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Finding the Fourth Proportional to 524,401.20, 786,601.80 and 440,420.40

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Solution

The fourth proportional to 524,401.20, 786,601.80 and 440,420.40 is: 660,630.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,401.20 : 786,601.80 = 440,420.40 : x
  2. Step 2: Convert to fraction form
    524,401.20/786,601.80 = 440,420.40/x
  3. Step 3: Cross multiply
    524,401.20x = 786,601.80 × 440,420.40
  4. Step 4: Simplify right side
    524,401.20x = 346,435,479,396.72
  5. Step 5: Solve for x
    x = 346,435,479,396.72/524,401.20
  6. Step 6: Final answer
    x = 660,630.60

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Half scale
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Double scale
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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.