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Finding the Fourth Proportional to 24,787.91, 34,136.88 and 21,802.79

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Solution

The fourth proportional to 24,787.91, 34,136.88 and 21,802.79 is: 30,025.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,787.91 : 34,136.88 = 21,802.79 : x
  2. Step 2: Convert to fraction form
    24,787.91/34,136.88 = 21,802.79/x
  3. Step 3: Cross multiply
    24,787.91x = 34,136.88 × 21,802.79
  4. Step 4: Simplify right side
    24,787.91x = 744,279,055.21
  5. Step 5: Solve for x
    x = 744,279,055.21/24,787.91
  6. Step 6: Final answer
    x = 30,025.90

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1.5x scale

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.