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Finding the Fourth Proportional to 14,616.80, 21,892.80 and 5,847.20

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Solution

The fourth proportional to 14,616.80, 21,892.80 and 5,847.20 is: 8,757.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,616.80 : 21,892.80 = 5,847.20 : x
  2. Step 2: Convert to fraction form
    14,616.80/21,892.80 = 5,847.20/x
  3. Step 3: Cross multiply
    14,616.80x = 21,892.80 × 5,847.20
  4. Step 4: Simplify right side
    14,616.80x = 128,011,580.16
  5. Step 5: Solve for x
    x = 128,011,580.16/14,616.80
  6. Step 6: Final answer
    x = 8,757.84

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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.