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Finding the Fourth Proportional to 71,565.60, 107,460.72 and 60,615.84

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Solution

The fourth proportional to 71,565.60, 107,460.72 and 60,615.84 is: 91,018.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,565.60 : 107,460.72 = 60,615.84 : x
  2. Step 2: Convert to fraction form
    71,565.60/107,460.72 = 60,615.84/x
  3. Step 3: Cross multiply
    71,565.60x = 107,460.72 × 60,615.84
  4. Step 4: Simplify right side
    71,565.60x = 6,513,821,809.80
  5. Step 5: Solve for x
    x = 6,513,821,809.80/71,565.60
  6. Step 6: Final answer
    x = 91,018.89

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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.