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Finding the Fourth Proportional to 72,473.48, 99,877.98 and 56,532.68

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Solution

The fourth proportional to 72,473.48, 99,877.98 and 56,532.68 is: 77,909.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,473.48 : 99,877.98 = 56,532.68 : x
  2. Step 2: Convert to fraction form
    72,473.48/99,877.98 = 56,532.68/x
  3. Step 3: Cross multiply
    72,473.48x = 99,877.98 × 56,532.68
  4. Step 4: Simplify right side
    72,473.48x = 5,646,369,882.39
  5. Step 5: Solve for x
    x = 5,646,369,882.39/72,473.48
  6. Step 6: Final answer
    x = 77,909.46

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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.