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Finding the Fourth Proportional to 125,759.55, 173,572.84 and 72,080.55

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Solution

The fourth proportional to 125,759.55, 173,572.84 and 72,080.55 is: 99,485.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,759.55 : 173,572.84 = 72,080.55 : x
  2. Step 2: Convert to fraction form
    125,759.55/173,572.84 = 72,080.55/x
  3. Step 3: Cross multiply
    125,759.55x = 173,572.84 × 72,080.55
  4. Step 4: Simplify right side
    125,759.55x = 12,511,225,862.36
  5. Step 5: Solve for x
    x = 12,511,225,862.36/125,759.55
  6. Step 6: Final answer
    x = 99,485.29

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1.5x scale

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.