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Finding the Fourth Proportional to 8,592.90, 12,943.35 and 7,817.88

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Solution

The fourth proportional to 8,592.90, 12,943.35 and 7,817.88 is: 11,775.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,592.90 : 12,943.35 = 7,817.88 : x
  2. Step 2: Convert to fraction form
    8,592.90/12,943.35 = 7,817.88/x
  3. Step 3: Cross multiply
    8,592.90x = 12,943.35 × 7,817.88
  4. Step 4: Simplify right side
    8,592.90x = 101,189,557.10
  5. Step 5: Solve for x
    x = 101,189,557.10/8,592.90
  6. Step 6: Final answer
    x = 11,775.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.