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Finding the Fourth Proportional to 125,961.64, 173,814.20 and 77,555.88

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Solution

The fourth proportional to 125,961.64, 173,814.20 and 77,555.88 is: 107,019.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,961.64 : 173,814.20 = 77,555.88 : x
  2. Step 2: Convert to fraction form
    125,961.64/173,814.20 = 77,555.88/x
  3. Step 3: Cross multiply
    125,961.64x = 173,814.20 × 77,555.88
  4. Step 4: Simplify right side
    125,961.64x = 13,480,313,237.50
  5. Step 5: Solve for x
    x = 13,480,313,237.50/125,961.64
  6. Step 6: Final answer
    x = 107,019.19

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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.