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Finding the Fourth Proportional to 125,266.39, 172,867.41 and 68,681.41

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Solution

The fourth proportional to 125,266.39, 172,867.41 and 68,681.41 is: 94,780.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,266.39 : 172,867.41 = 68,681.41 : x
  2. Step 2: Convert to fraction form
    125,266.39/172,867.41 = 68,681.41/x
  3. Step 3: Cross multiply
    125,266.39x = 172,867.41 × 68,681.41
  4. Step 4: Simplify right side
    125,266.39x = 11,872,777,461.85
  5. Step 5: Solve for x
    x = 11,872,777,461.85/125,266.39
  6. Step 6: Final answer
    x = 94,780.23

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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.