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Finding the Fourth Proportional to 17,641.20, 26,461.80 and 5,329.20

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Solution

The fourth proportional to 17,641.20, 26,461.80 and 5,329.20 is: 7,993.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,641.20 : 26,461.80 = 5,329.20 : x
  2. Step 2: Convert to fraction form
    17,641.20/26,461.80 = 5,329.20/x
  3. Step 3: Cross multiply
    17,641.20x = 26,461.80 × 5,329.20
  4. Step 4: Simplify right side
    17,641.20x = 141,020,224.56
  5. Step 5: Solve for x
    x = 141,020,224.56/17,641.20
  6. Step 6: Final answer
    x = 7,993.80

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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.