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Finding the Fourth Proportional to 22,818.30, 31,991.70 and 22,818.30

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Solution

The fourth proportional to 22,818.30, 31,991.70 and 22,818.30 is: 31,991.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,818.30 : 31,991.70 = 22,818.30 : x
  2. Step 2: Convert to fraction form
    22,818.30/31,991.70 = 22,818.30/x
  3. Step 3: Cross multiply
    22,818.30x = 31,991.70 × 22,818.30
  4. Step 4: Simplify right side
    22,818.30x = 729,996,208.11
  5. Step 5: Solve for x
    x = 729,996,208.11/22,818.30
  6. Step 6: Final answer
    x = 31,991.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.