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Finding the Fourth Proportional to 872,215.68, 1,306,988 and 586,849.12

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Solution

The fourth proportional to 872,215.68, 1,306,988 and 586,849.12 is: 879,375.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,215.68 : 1,306,988 = 586,849.12 : x
  2. Step 2: Convert to fraction form
    872,215.68/1,306,988 = 586,849.12/x
  3. Step 3: Cross multiply
    872,215.68x = 1,306,988 × 586,849.12
  4. Step 4: Simplify right side
    872,215.68x = 767,004,757,650.56
  5. Step 5: Solve for x
    x = 767,004,757,650.56/872,215.68
  6. Step 6: Final answer
    x = 879,375.11

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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.