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Finding the Fourth Proportional to 66,479.58, 99,693.68 and 25,948.08

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Solution

The fourth proportional to 66,479.58, 99,693.68 and 25,948.08 is: 38,912.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,479.58 : 99,693.68 = 25,948.08 : x
  2. Step 2: Convert to fraction form
    66,479.58/99,693.68 = 25,948.08/x
  3. Step 3: Cross multiply
    66,479.58x = 99,693.68 × 25,948.08
  4. Step 4: Simplify right side
    66,479.58x = 2,586,859,454.39
  5. Step 5: Solve for x
    x = 2,586,859,454.39/66,479.58
  6. Step 6: Final answer
    x = 38,912.09

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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.