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Finding the Fourth Proportional to 582,528.52, 804,138.11 and 391,652.61

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Solution

The fourth proportional to 582,528.52, 804,138.11 and 391,652.61 is: 540,647.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,528.52 : 804,138.11 = 391,652.61 : x
  2. Step 2: Convert to fraction form
    582,528.52/804,138.11 = 391,652.61/x
  3. Step 3: Cross multiply
    582,528.52x = 804,138.11 × 391,652.61
  4. Step 4: Simplify right side
    582,528.52x = 314,942,789,581.97
  5. Step 5: Solve for x
    x = 314,942,789,581.97/582,528.52
  6. Step 6: Final answer
    x = 540,647.85

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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.