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Finding the Fourth Proportional to 8,522.70, 12,784.05 and 6,335.70

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Solution

The fourth proportional to 8,522.70, 12,784.05 and 6,335.70 is: 9,503.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,522.70 : 12,784.05 = 6,335.70 : x
  2. Step 2: Convert to fraction form
    8,522.70/12,784.05 = 6,335.70/x
  3. Step 3: Cross multiply
    8,522.70x = 12,784.05 × 6,335.70
  4. Step 4: Simplify right side
    8,522.70x = 80,995,905.59
  5. Step 5: Solve for x
    x = 80,995,905.59/8,522.70
  6. Step 6: Final answer
    x = 9,503.55

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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.