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Finding the Fourth Proportional to 14,572.92, 21,859.38 and 6,787.20

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Solution

The fourth proportional to 14,572.92, 21,859.38 and 6,787.20 is: 10,180.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,572.92 : 21,859.38 = 6,787.20 : x
  2. Step 2: Convert to fraction form
    14,572.92/21,859.38 = 6,787.20/x
  3. Step 3: Cross multiply
    14,572.92x = 21,859.38 × 6,787.20
  4. Step 4: Simplify right side
    14,572.92x = 148,363,983.94
  5. Step 5: Solve for x
    x = 148,363,983.94/14,572.92
  6. Step 6: Final answer
    x = 10,180.80

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1.5x scale

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.