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Finding the Fourth Proportional to 376,715.12, 565,010.56 and 123,998.90

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Solution

The fourth proportional to 376,715.12, 565,010.56 and 123,998.90 is: 185,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,715.12 : 565,010.56 = 123,998.90 : x
  2. Step 2: Convert to fraction form
    376,715.12/565,010.56 = 123,998.90/x
  3. Step 3: Cross multiply
    376,715.12x = 565,010.56 × 123,998.90
  4. Step 4: Simplify right side
    376,715.12x = 70,060,687,928.38
  5. Step 5: Solve for x
    x = 70,060,687,928.38/376,715.12
  6. Step 6: Final answer
    x = 185,977.90

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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.