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Finding the Fourth Proportional to 125,175.98, 172,741.71 and 68,587.36

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Solution

The fourth proportional to 125,175.98, 172,741.71 and 68,587.36 is: 94,649.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,175.98 : 172,741.71 = 68,587.36 : x
  2. Step 2: Convert to fraction form
    125,175.98/172,741.71 = 68,587.36/x
  3. Step 3: Cross multiply
    125,175.98x = 172,741.71 × 68,587.36
  4. Step 4: Simplify right side
    125,175.98x = 11,847,897,676.13
  5. Step 5: Solve for x
    x = 11,847,897,676.13/125,175.98
  6. Step 6: Final answer
    x = 94,649.93

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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.