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Finding the Fourth Proportional to 125,231.52, 172,822.50 and 68,646

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Solution

The fourth proportional to 125,231.52, 172,822.50 and 68,646 is: 94,733.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,231.52 : 172,822.50 = 68,646 : x
  2. Step 2: Convert to fraction form
    125,231.52/172,822.50 = 68,646/x
  3. Step 3: Cross multiply
    125,231.52x = 172,822.50 × 68,646
  4. Step 4: Simplify right side
    125,231.52x = 11,863,573,335
  5. Step 5: Solve for x
    x = 11,863,573,335/125,231.52
  6. Step 6: Final answer
    x = 94,733.13

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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.