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Finding the Fourth Proportional to 15,934.20, 22,338.60 and 15,934.20

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Solution

The fourth proportional to 15,934.20, 22,338.60 and 15,934.20 is: 22,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,934.20 : 22,338.60 = 15,934.20 : x
  2. Step 2: Convert to fraction form
    15,934.20/22,338.60 = 15,934.20/x
  3. Step 3: Cross multiply
    15,934.20x = 22,338.60 × 15,934.20
  4. Step 4: Simplify right side
    15,934.20x = 355,947,720.12
  5. Step 5: Solve for x
    x = 355,947,720.12/15,934.20
  6. Step 6: Final answer
    x = 22,338.60

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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.