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Finding the Fourth Proportional to 60,035.22, 90,107.10 and 31,978.71

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Solution

The fourth proportional to 60,035.22, 90,107.10 and 31,978.71 is: 47,996.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,035.22 : 90,107.10 = 31,978.71 : x
  2. Step 2: Convert to fraction form
    60,035.22/90,107.10 = 31,978.71/x
  3. Step 3: Cross multiply
    60,035.22x = 90,107.10 × 31,978.71
  4. Step 4: Simplify right side
    60,035.22x = 2,881,508,819.84
  5. Step 5: Solve for x
    x = 2,881,508,819.84/60,035.22
  6. Step 6: Final answer
    x = 47,996.97

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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.