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Finding the Fourth Proportional to 93,939.72, 129,634.13 and 53,652.65

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Solution

The fourth proportional to 93,939.72, 129,634.13 and 53,652.65 is: 74,039.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,939.72 : 129,634.13 = 53,652.65 : x
  2. Step 2: Convert to fraction form
    93,939.72/129,634.13 = 53,652.65/x
  3. Step 3: Cross multiply
    93,939.72x = 129,634.13 × 53,652.65
  4. Step 4: Simplify right side
    93,939.72x = 6,955,214,577.03
  5. Step 5: Solve for x
    x = 6,955,214,577.03/93,939.72
  6. Step 6: Final answer
    x = 74,039.12

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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.