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Finding the Fourth Proportional to 582,439.68, 804,014.76 and 391,563.78

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Solution

The fourth proportional to 582,439.68, 804,014.76 and 391,563.78 is: 540,524.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,439.68 : 804,014.76 = 391,563.78 : x
  2. Step 2: Convert to fraction form
    582,439.68/804,014.76 = 391,563.78/x
  3. Step 3: Cross multiply
    582,439.68x = 804,014.76 × 391,563.78
  4. Step 4: Simplify right side
    582,439.68x = 314,823,058,601.39
  5. Step 5: Solve for x
    x = 314,823,058,601.39/582,439.68
  6. Step 6: Final answer
    x = 540,524.74

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1.5x scale

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.