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Finding the Fourth Proportional to 582,519.87, 804,126.15 and 391,644

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Solution

The fourth proportional to 582,519.87, 804,126.15 and 391,644 is: 540,635.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,519.87 : 804,126.15 = 391,644 : x
  2. Step 2: Convert to fraction form
    582,519.87/804,126.15 = 391,644/x
  3. Step 3: Cross multiply
    582,519.87x = 804,126.15 × 391,644
  4. Step 4: Simplify right side
    582,519.87x = 314,931,181,890.60
  5. Step 5: Solve for x
    x = 314,931,181,890.60/582,519.87
  6. Step 6: Final answer
    x = 540,635.95

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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.