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Finding the Fourth Proportional to 112,702.88, 155,534.84 and 62,401.88

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Solution

The fourth proportional to 112,702.88, 155,534.84 and 62,401.88 is: 86,117.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,702.88 : 155,534.84 = 62,401.88 : x
  2. Step 2: Convert to fraction form
    112,702.88/155,534.84 = 62,401.88/x
  3. Step 3: Cross multiply
    112,702.88x = 155,534.84 × 62,401.88
  4. Step 4: Simplify right side
    112,702.88x = 9,705,665,331.82
  5. Step 5: Solve for x
    x = 9,705,665,331.82/112,702.88
  6. Step 6: Final answer
    x = 86,117.28

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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.