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Finding the Fourth Proportional to 334,411.20, 501,616.80 and 147,787.20

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Solution

The fourth proportional to 334,411.20, 501,616.80 and 147,787.20 is: 221,680.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,411.20 : 501,616.80 = 147,787.20 : x
  2. Step 2: Convert to fraction form
    334,411.20/501,616.80 = 147,787.20/x
  3. Step 3: Cross multiply
    334,411.20x = 501,616.80 × 147,787.20
  4. Step 4: Simplify right side
    334,411.20x = 74,132,542,344.96
  5. Step 5: Solve for x
    x = 74,132,542,344.96/334,411.20
  6. Step 6: Final answer
    x = 221,680.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.