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Finding the Fourth Proportional to 8,759.68, 12,088.39 and 4,780.88

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Solution

The fourth proportional to 8,759.68, 12,088.39 and 4,780.88 is: 6,597.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,759.68 : 12,088.39 = 4,780.88 : x
  2. Step 2: Convert to fraction form
    8,759.68/12,088.39 = 4,780.88/x
  3. Step 3: Cross multiply
    8,759.68x = 12,088.39 × 4,780.88
  4. Step 4: Simplify right side
    8,759.68x = 57,793,069.59
  5. Step 5: Solve for x
    x = 57,793,069.59/8,759.68
  6. Step 6: Final answer
    x = 6,597.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.