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Finding the Fourth Proportional to 21,817.62, 32,700.02 and 9,955.17

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Solution

The fourth proportional to 21,817.62, 32,700.02 and 9,955.17 is: 14,920.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,817.62 : 32,700.02 = 9,955.17 : x
  2. Step 2: Convert to fraction form
    21,817.62/32,700.02 = 9,955.17/x
  3. Step 3: Cross multiply
    21,817.62x = 32,700.02 × 9,955.17
  4. Step 4: Simplify right side
    21,817.62x = 325,534,208.33
  5. Step 5: Solve for x
    x = 325,534,208.33/21,817.62
  6. Step 6: Final answer
    x = 14,920.70

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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.