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Finding the Fourth Proportional to 15,912.90, 22,248.90 and 15,912.90

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Solution

The fourth proportional to 15,912.90, 22,248.90 and 15,912.90 is: 22,248.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,912.90 : 22,248.90 = 15,912.90 : x
  2. Step 2: Convert to fraction form
    15,912.90/22,248.90 = 15,912.90/x
  3. Step 3: Cross multiply
    15,912.90x = 22,248.90 × 15,912.90
  4. Step 4: Simplify right side
    15,912.90x = 354,044,520.81
  5. Step 5: Solve for x
    x = 354,044,520.81/15,912.90
  6. Step 6: Final answer
    x = 22,248.90

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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.