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Finding the Fourth Proportional to 72,332.89, 99,752.80 and 49,631.83

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Solution

The fourth proportional to 72,332.89, 99,752.80 and 49,631.83 is: 68,446.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,332.89 : 99,752.80 = 49,631.83 : x
  2. Step 2: Convert to fraction form
    72,332.89/99,752.80 = 49,631.83/x
  3. Step 3: Cross multiply
    72,332.89x = 99,752.80 × 49,631.83
  4. Step 4: Simplify right side
    72,332.89x = 4,950,914,011.62
  5. Step 5: Solve for x
    x = 4,950,914,011.62/72,332.89
  6. Step 6: Final answer
    x = 68,446.24

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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.