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Finding the Fourth Proportional to 582,437.68, 804,012 and 391,561.78

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Solution

The fourth proportional to 582,437.68, 804,012 and 391,561.78 is: 540,521.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,437.68 : 804,012 = 391,561.78 : x
  2. Step 2: Convert to fraction form
    582,437.68/804,012 = 391,561.78/x
  3. Step 3: Cross multiply
    582,437.68x = 804,012 × 391,561.78
  4. Step 4: Simplify right side
    582,437.68x = 314,820,369,861.36
  5. Step 5: Solve for x
    x = 314,820,369,861.36/582,437.68
  6. Step 6: Final answer
    x = 540,521.98

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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.