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Finding the Fourth Proportional to 621,261.96, 930,526.96 and 513,423.72

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Solution

The fourth proportional to 621,261.96, 930,526.96 and 513,423.72 is: 769,006.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,261.96 : 930,526.96 = 513,423.72 : x
  2. Step 2: Convert to fraction form
    621,261.96/930,526.96 = 513,423.72/x
  3. Step 3: Cross multiply
    621,261.96x = 930,526.96 × 513,423.72
  4. Step 4: Simplify right side
    621,261.96x = 477,754,613,363.49
  5. Step 5: Solve for x
    x = 477,754,613,363.49/621,261.96
  6. Step 6: Final answer
    x = 769,006.71

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Double scale
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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.