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Finding the Fourth Proportional to 99,318.40, 148,934.40 and 32,732.80

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Solution

The fourth proportional to 99,318.40, 148,934.40 and 32,732.80 is: 49,084.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,318.40 : 148,934.40 = 32,732.80 : x
  2. Step 2: Convert to fraction form
    99,318.40/148,934.40 = 32,732.80/x
  3. Step 3: Cross multiply
    99,318.40x = 148,934.40 × 32,732.80
  4. Step 4: Simplify right side
    99,318.40x = 4,875,039,928.32
  5. Step 5: Solve for x
    x = 4,875,039,928.32/99,318.40
  6. Step 6: Final answer
    x = 49,084.96

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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.