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Finding the Fourth Proportional to 21,658.80, 32,488.70 and 10,563.96

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Solution

The fourth proportional to 21,658.80, 32,488.70 and 10,563.96 is: 15,846.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,658.80 : 32,488.70 = 10,563.96 : x
  2. Step 2: Convert to fraction form
    21,658.80/32,488.70 = 10,563.96/x
  3. Step 3: Cross multiply
    21,658.80x = 32,488.70 × 10,563.96
  4. Step 4: Simplify right side
    21,658.80x = 343,209,327.25
  5. Step 5: Solve for x
    x = 343,209,327.25/21,658.80
  6. Step 6: Final answer
    x = 15,846.18

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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.