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Finding the Fourth Proportional to 125,302.86, 172,925.82 and 68,714.25

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Solution

The fourth proportional to 125,302.86, 172,925.82 and 68,714.25 is: 94,829.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,302.86 : 172,925.82 = 68,714.25 : x
  2. Step 2: Convert to fraction form
    125,302.86/172,925.82 = 68,714.25/x
  3. Step 3: Cross multiply
    125,302.86x = 172,925.82 × 68,714.25
  4. Step 4: Simplify right side
    125,302.86x = 11,882,468,026.94
  5. Step 5: Solve for x
    x = 11,882,468,026.94/125,302.86
  6. Step 6: Final answer
    x = 94,829.98

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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.