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Finding the Fourth Proportional to 620,153.10, 930,229.65 and 541,421.10

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Solution

The fourth proportional to 620,153.10, 930,229.65 and 541,421.10 is: 812,131.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,153.10 : 930,229.65 = 541,421.10 : x
  2. Step 2: Convert to fraction form
    620,153.10/930,229.65 = 541,421.10/x
  3. Step 3: Cross multiply
    620,153.10x = 930,229.65 × 541,421.10
  4. Step 4: Simplify right side
    620,153.10x = 503,645,960,355.62
  5. Step 5: Solve for x
    x = 503,645,960,355.62/620,153.10
  6. Step 6: Final answer
    x = 812,131.65

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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.