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Finding the Fourth Proportional to 72,232.66, 99,473.16 and 59,540.78

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Solution

The fourth proportional to 72,232.66, 99,473.16 and 59,540.78 is: 81,994.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,232.66 : 99,473.16 = 59,540.78 : x
  2. Step 2: Convert to fraction form
    72,232.66/99,473.16 = 59,540.78/x
  3. Step 3: Cross multiply
    72,232.66x = 99,473.16 × 59,540.78
  4. Step 4: Simplify right side
    72,232.66x = 5,922,709,535.46
  5. Step 5: Solve for x
    x = 5,922,709,535.46/72,232.66
  6. Step 6: Final answer
    x = 81,994.90

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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.