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Finding the Fourth Proportional to 147,713.20, 221,569.80 and 49,217.20

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Solution

The fourth proportional to 147,713.20, 221,569.80 and 49,217.20 is: 73,825.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,713.20 : 221,569.80 = 49,217.20 : x
  2. Step 2: Convert to fraction form
    147,713.20/221,569.80 = 49,217.20/x
  3. Step 3: Cross multiply
    147,713.20x = 221,569.80 × 49,217.20
  4. Step 4: Simplify right side
    147,713.20x = 10,905,045,160.56
  5. Step 5: Solve for x
    x = 10,905,045,160.56/147,713.20
  6. Step 6: Final answer
    x = 73,825.80

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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.