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Finding the Fourth Proportional to 502,679.16, 693,679.68 and 276,323.04

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Solution

The fourth proportional to 502,679.16, 693,679.68 and 276,323.04 is: 381,316.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,679.16 : 693,679.68 = 276,323.04 : x
  2. Step 2: Convert to fraction form
    502,679.16/693,679.68 = 276,323.04/x
  3. Step 3: Cross multiply
    502,679.16x = 693,679.68 × 276,323.04
  4. Step 4: Simplify right side
    502,679.16x = 191,679,677,963.83
  5. Step 5: Solve for x
    x = 191,679,677,963.83/502,679.16
  6. Step 6: Final answer
    x = 381,316.14

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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.