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Finding the Fourth Proportional to 620,147.10, 930,220.65 and 541,415.10

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Solution

The fourth proportional to 620,147.10, 930,220.65 and 541,415.10 is: 812,122.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,147.10 : 930,220.65 = 541,415.10 : x
  2. Step 2: Convert to fraction form
    620,147.10/930,220.65 = 541,415.10/x
  3. Step 3: Cross multiply
    620,147.10x = 930,220.65 × 541,415.10
  4. Step 4: Simplify right side
    620,147.10x = 503,635,506,241.82
  5. Step 5: Solve for x
    x = 503,635,506,241.82/620,147.10
  6. Step 6: Final answer
    x = 812,122.65

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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.