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Finding the Fourth Proportional to 423,787.62, 585,344.97 and 316,833.06

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Solution

The fourth proportional to 423,787.62, 585,344.97 and 316,833.06 is: 437,616.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,787.62 : 585,344.97 = 316,833.06 : x
  2. Step 2: Convert to fraction form
    423,787.62/585,344.97 = 316,833.06/x
  3. Step 3: Cross multiply
    423,787.62x = 585,344.97 × 316,833.06
  4. Step 4: Simplify right side
    423,787.62x = 185,456,638,000.71
  5. Step 5: Solve for x
    x = 185,456,638,000.71/423,787.62
  6. Step 6: Final answer
    x = 437,616.93

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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.