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Finding the Fourth Proportional to 124,641.71, 172,005.49 and 68,053.08

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Solution

The fourth proportional to 124,641.71, 172,005.49 and 68,053.08 is: 93,913.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,641.71 : 172,005.49 = 68,053.08 : x
  2. Step 2: Convert to fraction form
    124,641.71/172,005.49 = 68,053.08/x
  3. Step 3: Cross multiply
    124,641.71x = 172,005.49 × 68,053.08
  4. Step 4: Simplify right side
    124,641.71x = 11,705,503,371.41
  5. Step 5: Solve for x
    x = 11,705,503,371.41/124,641.71
  6. Step 6: Final answer
    x = 93,913.21

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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.