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Finding the Fourth Proportional to 125,406.64, 173,063.28 and 68,823.28

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Solution

The fourth proportional to 125,406.64, 173,063.28 and 68,823.28 is: 94,977.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,406.64 : 173,063.28 = 68,823.28 : x
  2. Step 2: Convert to fraction form
    125,406.64/173,063.28 = 68,823.28/x
  3. Step 3: Cross multiply
    125,406.64x = 173,063.28 × 68,823.28
  4. Step 4: Simplify right side
    125,406.64x = 11,910,782,577.16
  5. Step 5: Solve for x
    x = 11,910,782,577.16/125,406.64
  6. Step 6: Final answer
    x = 94,977.29

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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.