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Finding the Fourth Proportional to 72,472.88, 108,659.64 and 32,476.88

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Solution

The fourth proportional to 72,472.88, 108,659.64 and 32,476.88 is: 48,693.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,472.88 : 108,659.64 = 32,476.88 : x
  2. Step 2: Convert to fraction form
    72,472.88/108,659.64 = 32,476.88/x
  3. Step 3: Cross multiply
    72,472.88x = 108,659.64 × 32,476.88
  4. Step 4: Simplify right side
    72,472.88x = 3,528,926,089.12
  5. Step 5: Solve for x
    x = 3,528,926,089.12/72,472.88
  6. Step 6: Final answer
    x = 48,693.06

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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.