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Finding the Fourth Proportional to 71,602.18, 107,344.14 and 31,592.68

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Solution

The fourth proportional to 71,602.18, 107,344.14 and 31,592.68 is: 47,362.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,602.18 : 107,344.14 = 31,592.68 : x
  2. Step 2: Convert to fraction form
    71,602.18/107,344.14 = 31,592.68/x
  3. Step 3: Cross multiply
    71,602.18x = 107,344.14 × 31,592.68
  4. Step 4: Simplify right side
    71,602.18x = 3,391,289,064.90
  5. Step 5: Solve for x
    x = 3,391,289,064.90/71,602.18
  6. Step 6: Final answer
    x = 47,362.93

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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.