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Finding the Fourth Proportional to 147,078.51, 220,551.74 and 41,872.47

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Solution

The fourth proportional to 147,078.51, 220,551.74 and 41,872.47 is: 62,789.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,078.51 : 220,551.74 = 41,872.47 : x
  2. Step 2: Convert to fraction form
    147,078.51/220,551.74 = 41,872.47/x
  3. Step 3: Cross multiply
    147,078.51x = 220,551.74 × 41,872.47
  4. Step 4: Simplify right side
    147,078.51x = 9,235,046,116.60
  5. Step 5: Solve for x
    x = 9,235,046,116.60/147,078.51
  6. Step 6: Final answer
    x = 62,789.91

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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.