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Finding the Fourth Proportional to 125,720.88, 173,499.48 and 75,410.16

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Solution

The fourth proportional to 125,720.88, 173,499.48 and 75,410.16 is: 104,068.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,720.88 : 173,499.48 = 75,410.16 : x
  2. Step 2: Convert to fraction form
    125,720.88/173,499.48 = 75,410.16/x
  3. Step 3: Cross multiply
    125,720.88x = 173,499.48 × 75,410.16
  4. Step 4: Simplify right side
    125,720.88x = 13,083,623,546.72
  5. Step 5: Solve for x
    x = 13,083,623,546.72/125,720.88
  6. Step 6: Final answer
    x = 104,068.82

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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.