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Finding the Fourth Proportional to 125,069.56, 172,597.09 and 74,085.19

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Solution

The fourth proportional to 125,069.56, 172,597.09 and 74,085.19 is: 102,238.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,069.56 : 172,597.09 = 74,085.19 : x
  2. Step 2: Convert to fraction form
    125,069.56/172,597.09 = 74,085.19/x
  3. Step 3: Cross multiply
    125,069.56x = 172,597.09 × 74,085.19
  4. Step 4: Simplify right side
    125,069.56x = 12,786,888,206.10
  5. Step 5: Solve for x
    x = 12,786,888,206.10/125,069.56
  6. Step 6: Final answer
    x = 102,238.21

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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.