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Finding the Fourth Proportional to 93,981.52, 129,693.90 and 53,707.60

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Solution

The fourth proportional to 93,981.52, 129,693.90 and 53,707.60 is: 74,116.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,981.52 : 129,693.90 = 53,707.60 : x
  2. Step 2: Convert to fraction form
    93,981.52/129,693.90 = 53,707.60/x
  3. Step 3: Cross multiply
    93,981.52x = 129,693.90 × 53,707.60
  4. Step 4: Simplify right side
    93,981.52x = 6,965,548,103.64
  5. Step 5: Solve for x
    x = 6,965,548,103.64/93,981.52
  6. Step 6: Final answer
    x = 74,116.15

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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.