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Finding the Fourth Proportional to 8,899.84, 12,281.99 and 5,761.50

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Solution

The fourth proportional to 8,899.84, 12,281.99 and 5,761.50 is: 7,951.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,899.84 : 12,281.99 = 5,761.50 : x
  2. Step 2: Convert to fraction form
    8,899.84/12,281.99 = 5,761.50/x
  3. Step 3: Cross multiply
    8,899.84x = 12,281.99 × 5,761.50
  4. Step 4: Simplify right side
    8,899.84x = 70,762,685.39
  5. Step 5: Solve for x
    x = 70,762,685.39/8,899.84
  6. Step 6: Final answer
    x = 7,951.01

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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.