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Finding the Fourth Proportional to 22,815.20, 34,222.80 and 10,335.20

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Solution

The fourth proportional to 22,815.20, 34,222.80 and 10,335.20 is: 15,502.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,815.20 : 34,222.80 = 10,335.20 : x
  2. Step 2: Convert to fraction form
    22,815.20/34,222.80 = 10,335.20/x
  3. Step 3: Cross multiply
    22,815.20x = 34,222.80 × 10,335.20
  4. Step 4: Simplify right side
    22,815.20x = 353,699,482.56
  5. Step 5: Solve for x
    x = 353,699,482.56/22,815.20
  6. Step 6: Final answer
    x = 15,502.80

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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.