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Finding the Fourth Proportional to 125,063.91, 172,588.01 and 67,702.95

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Solution

The fourth proportional to 125,063.91, 172,588.01 and 67,702.95 is: 93,429.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,063.91 : 172,588.01 = 67,702.95 : x
  2. Step 2: Convert to fraction form
    125,063.91/172,588.01 = 67,702.95/x
  3. Step 3: Cross multiply
    125,063.91x = 172,588.01 × 67,702.95
  4. Step 4: Simplify right side
    125,063.91x = 11,684,717,411.63
  5. Step 5: Solve for x
    x = 11,684,717,411.63/125,063.91
  6. Step 6: Final answer
    x = 93,429.97

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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.