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Finding the Fourth Proportional to 72,445.10, 108,691.32 and 35,009.48

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Solution

The fourth proportional to 72,445.10, 108,691.32 and 35,009.48 is: 52,525.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,445.10 : 108,691.32 = 35,009.48 : x
  2. Step 2: Convert to fraction form
    72,445.10/108,691.32 = 35,009.48/x
  3. Step 3: Cross multiply
    72,445.10x = 108,691.32 × 35,009.48
  4. Step 4: Simplify right side
    72,445.10x = 3,805,226,593.71
  5. Step 5: Solve for x
    x = 3,805,226,593.71/72,445.10
  6. Step 6: Final answer
    x = 52,525.66

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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.