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Finding the Fourth Proportional to 124,643.84, 172,001.68 and 68,053.92

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Solution

The fourth proportional to 124,643.84, 172,001.68 and 68,053.92 is: 93,910.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,643.84 : 172,001.68 = 68,053.92 : x
  2. Step 2: Convert to fraction form
    124,643.84/172,001.68 = 68,053.92/x
  3. Step 3: Cross multiply
    124,643.84x = 172,001.68 × 68,053.92
  4. Step 4: Simplify right side
    124,643.84x = 11,705,388,570.59
  5. Step 5: Solve for x
    x = 11,705,388,570.59/124,643.84
  6. Step 6: Final answer
    x = 93,910.69

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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.