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Finding the Fourth Proportional to 15,909.70, 22,304.30 and 15,909.70

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Solution

The fourth proportional to 15,909.70, 22,304.30 and 15,909.70 is: 22,304.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,909.70 : 22,304.30 = 15,909.70 : x
  2. Step 2: Convert to fraction form
    15,909.70/22,304.30 = 15,909.70/x
  3. Step 3: Cross multiply
    15,909.70x = 22,304.30 × 15,909.70
  4. Step 4: Simplify right side
    15,909.70x = 354,854,721.71
  5. Step 5: Solve for x
    x = 354,854,721.71/15,909.70
  6. Step 6: Final answer
    x = 22,304.30

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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.