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Finding the Fourth Proportional to 71,698.68, 107,020.26 and 62,404.20

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Solution

The fourth proportional to 71,698.68, 107,020.26 and 62,404.20 is: 93,146.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,698.68 : 107,020.26 = 62,404.20 : x
  2. Step 2: Convert to fraction form
    71,698.68/107,020.26 = 62,404.20/x
  3. Step 3: Cross multiply
    71,698.68x = 107,020.26 × 62,404.20
  4. Step 4: Simplify right side
    71,698.68x = 6,678,513,709.09
  5. Step 5: Solve for x
    x = 6,678,513,709.09/71,698.68
  6. Step 6: Final answer
    x = 93,146.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.