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Finding the Fourth Proportional to 14,452.80, 21,679.20 and 10,564.80

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Solution

The fourth proportional to 14,452.80, 21,679.20 and 10,564.80 is: 15,847.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,452.80 : 21,679.20 = 10,564.80 : x
  2. Step 2: Convert to fraction form
    14,452.80/21,679.20 = 10,564.80/x
  3. Step 3: Cross multiply
    14,452.80x = 21,679.20 × 10,564.80
  4. Step 4: Simplify right side
    14,452.80x = 229,036,412.16
  5. Step 5: Solve for x
    x = 229,036,412.16/14,452.80
  6. Step 6: Final answer
    x = 15,847.20

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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.