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Finding the Fourth Proportional to 144,407.51, 216,648.31 and 60,139.66

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Solution

The fourth proportional to 144,407.51, 216,648.31 and 60,139.66 is: 90,224.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,407.51 : 216,648.31 = 60,139.66 : x
  2. Step 2: Convert to fraction form
    144,407.51/216,648.31 = 60,139.66/x
  3. Step 3: Cross multiply
    144,407.51x = 216,648.31 × 60,139.66
  4. Step 4: Simplify right side
    144,407.51x = 13,029,155,702.97
  5. Step 5: Solve for x
    x = 13,029,155,702.97/144,407.51
  6. Step 6: Final answer
    x = 90,224.92

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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.