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Finding the Fourth Proportional to 73,356.32, 109,933.68 and 39,988.64

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Solution

The fourth proportional to 73,356.32, 109,933.68 and 39,988.64 is: 59,928.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,356.32 : 109,933.68 = 39,988.64 : x
  2. Step 2: Convert to fraction form
    73,356.32/109,933.68 = 39,988.64/x
  3. Step 3: Cross multiply
    73,356.32x = 109,933.68 × 39,988.64
  4. Step 4: Simplify right side
    73,356.32x = 4,396,098,353.40
  5. Step 5: Solve for x
    x = 4,396,098,353.40/73,356.32
  6. Step 6: Final answer
    x = 59,928.01

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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.