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Finding the Fourth Proportional to 582,677.60, 804,219.17 and 391,580.28

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Solution

The fourth proportional to 582,677.60, 804,219.17 and 391,580.28 is: 540,464.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,677.60 : 804,219.17 = 391,580.28 : x
  2. Step 2: Convert to fraction form
    582,677.60/804,219.17 = 391,580.28/x
  3. Step 3: Cross multiply
    582,677.60x = 804,219.17 × 391,580.28
  4. Step 4: Simplify right side
    582,677.60x = 314,916,365,812.07
  5. Step 5: Solve for x
    x = 314,916,365,812.07/582,677.60
  6. Step 6: Final answer
    x = 540,464.18

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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.