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Finding the Fourth Proportional to 641,179.84, 884,860.48 and 386,613.12

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Solution

The fourth proportional to 641,179.84, 884,860.48 and 386,613.12 is: 533,545.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,179.84 : 884,860.48 = 386,613.12 : x
  2. Step 2: Convert to fraction form
    641,179.84/884,860.48 = 386,613.12/x
  3. Step 3: Cross multiply
    641,179.84x = 884,860.48 × 386,613.12
  4. Step 4: Simplify right side
    641,179.84x = 342,098,670,937.50
  5. Step 5: Solve for x
    x = 342,098,670,937.50/641,179.84
  6. Step 6: Final answer
    x = 533,545.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.