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Finding the Fourth Proportional to 93,987.78, 129,691.14 and 53,704.16

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Solution

The fourth proportional to 93,987.78, 129,691.14 and 53,704.16 is: 74,104.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,987.78 : 129,691.14 = 53,704.16 : x
  2. Step 2: Convert to fraction form
    93,987.78/129,691.14 = 53,704.16/x
  3. Step 3: Cross multiply
    93,987.78x = 129,691.14 × 53,704.16
  4. Step 4: Simplify right side
    93,987.78x = 6,964,953,733.14
  5. Step 5: Solve for x
    x = 6,964,953,733.14/93,987.78
  6. Step 6: Final answer
    x = 74,104.89

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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.