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Finding the Fourth Proportional to 11,565.80, 17,356.80 and 4,996.70

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Solution

The fourth proportional to 11,565.80, 17,356.80 and 4,996.70 is: 7,498.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,565.80 : 17,356.80 = 4,996.70 : x
  2. Step 2: Convert to fraction form
    11,565.80/17,356.80 = 4,996.70/x
  3. Step 3: Cross multiply
    11,565.80x = 17,356.80 × 4,996.70
  4. Step 4: Simplify right side
    11,565.80x = 86,726,722.56
  5. Step 5: Solve for x
    x = 86,726,722.56/11,565.80
  6. Step 6: Final answer
    x = 7,498.55

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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.