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Finding the Fourth Proportional to 147,712.70, 221,569.05 and 49,216.70

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Solution

The fourth proportional to 147,712.70, 221,569.05 and 49,216.70 is: 73,825.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,712.70 : 221,569.05 = 49,216.70 : x
  2. Step 2: Convert to fraction form
    147,712.70/221,569.05 = 49,216.70/x
  3. Step 3: Cross multiply
    147,712.70x = 221,569.05 × 49,216.70
  4. Step 4: Simplify right side
    147,712.70x = 10,904,897,463.14
  5. Step 5: Solve for x
    x = 10,904,897,463.14/147,712.70
  6. Step 6: Final answer
    x = 73,825.05

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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.