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Finding the Fourth Proportional to 125,161.68, 172,721.88 and 68,573.04

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Solution

The fourth proportional to 125,161.68, 172,721.88 and 68,573.04 is: 94,630.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,161.68 : 172,721.88 = 68,573.04 : x
  2. Step 2: Convert to fraction form
    125,161.68/172,721.88 = 68,573.04/x
  3. Step 3: Cross multiply
    125,161.68x = 172,721.88 × 68,573.04
  4. Step 4: Simplify right side
    125,161.68x = 11,844,064,386.12
  5. Step 5: Solve for x
    x = 11,844,064,386.12/125,161.68
  6. Step 6: Final answer
    x = 94,630.12

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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.