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Finding the Fourth Proportional to 21,700.98, 32,553.88 and 6,906.47

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Solution

The fourth proportional to 21,700.98, 32,553.88 and 6,906.47 is: 10,360.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,700.98 : 32,553.88 = 6,906.47 : x
  2. Step 2: Convert to fraction form
    21,700.98/32,553.88 = 6,906.47/x
  3. Step 3: Cross multiply
    21,700.98x = 32,553.88 × 6,906.47
  4. Step 4: Simplify right side
    21,700.98x = 224,832,215.57
  5. Step 5: Solve for x
    x = 224,832,215.57/21,700.98
  6. Step 6: Final answer
    x = 10,360.46

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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.