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Finding the Fourth Proportional to 125,672.95, 188,436.52 and 50,731.75

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Solution

The fourth proportional to 125,672.95, 188,436.52 and 50,731.75 is: 76,068.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,672.95 : 188,436.52 = 50,731.75 : x
  2. Step 2: Convert to fraction form
    125,672.95/188,436.52 = 50,731.75/x
  3. Step 3: Cross multiply
    125,672.95x = 188,436.52 × 50,731.75
  4. Step 4: Simplify right side
    125,672.95x = 9,559,713,227.67
  5. Step 5: Solve for x
    x = 9,559,713,227.67/125,672.95
  6. Step 6: Final answer
    x = 76,068.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.