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Finding the Fourth Proportional to 582,642.90, 804,068.92 and 321,008.84

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Solution

The fourth proportional to 582,642.90, 804,068.92 and 321,008.84 is: 443,004.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,642.90 : 804,068.92 = 321,008.84 : x
  2. Step 2: Convert to fraction form
    582,642.90/804,068.92 = 321,008.84/x
  3. Step 3: Cross multiply
    582,642.90x = 804,068.92 × 321,008.84
  4. Step 4: Simplify right side
    582,642.90x = 258,113,233,700.69
  5. Step 5: Solve for x
    x = 258,113,233,700.69/582,642.90
  6. Step 6: Final answer
    x = 443,004.17

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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.