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Finding the Fourth Proportional to 72,332.90, 99,752.79 and 49,631.84

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Solution

The fourth proportional to 72,332.90, 99,752.79 and 49,631.84 is: 68,446.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,332.90 : 99,752.79 = 49,631.84 : x
  2. Step 2: Convert to fraction form
    72,332.90/99,752.79 = 49,631.84/x
  3. Step 3: Cross multiply
    72,332.90x = 99,752.79 × 49,631.84
  4. Step 4: Simplify right side
    72,332.90x = 4,950,914,512.83
  5. Step 5: Solve for x
    x = 4,950,914,512.83/72,332.90
  6. Step 6: Final answer
    x = 68,446.23

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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.