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Finding the Fourth Proportional to 14,787.92, 20,410.84 and 8,503.96

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Solution

The fourth proportional to 14,787.92, 20,410.84 and 8,503.96 is: 11,737.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,787.92 : 20,410.84 = 8,503.96 : x
  2. Step 2: Convert to fraction form
    14,787.92/20,410.84 = 8,503.96/x
  3. Step 3: Cross multiply
    14,787.92x = 20,410.84 × 8,503.96
  4. Step 4: Simplify right side
    14,787.92x = 173,572,966.93
  5. Step 5: Solve for x
    x = 173,572,966.93/14,787.92
  6. Step 6: Final answer
    x = 11,737.48

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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.