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Finding the Fourth Proportional to 52,479.70, 72,419.37 and 29,815.70

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Solution

The fourth proportional to 52,479.70, 72,419.37 and 29,815.70 is: 41,144.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,479.70 : 72,419.37 = 29,815.70 : x
  2. Step 2: Convert to fraction form
    52,479.70/72,419.37 = 29,815.70/x
  3. Step 3: Cross multiply
    52,479.70x = 72,419.37 × 29,815.70
  4. Step 4: Simplify right side
    52,479.70x = 2,159,233,736.20
  5. Step 5: Solve for x
    x = 2,159,233,736.20/52,479.70
  6. Step 6: Final answer
    x = 41,144.17

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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.