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Finding the Fourth Proportional to 21,655.80, 32,484.20 and 10,560.96

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Solution

The fourth proportional to 21,655.80, 32,484.20 and 10,560.96 is: 15,841.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,655.80 : 32,484.20 = 10,560.96 : x
  2. Step 2: Convert to fraction form
    21,655.80/32,484.20 = 10,560.96/x
  3. Step 3: Cross multiply
    21,655.80x = 32,484.20 × 10,560.96
  4. Step 4: Simplify right side
    21,655.80x = 343,064,336.83
  5. Step 5: Solve for x
    x = 343,064,336.83/21,655.80
  6. Step 6: Final answer
    x = 15,841.68

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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.