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Finding the Fourth Proportional to 7,792.90, 11,690.90 and 2,862.59

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Solution

The fourth proportional to 7,792.90, 11,690.90 and 2,862.59 is: 4,294.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,792.90 : 11,690.90 = 2,862.59 : x
  2. Step 2: Convert to fraction form
    7,792.90/11,690.90 = 2,862.59/x
  3. Step 3: Cross multiply
    7,792.90x = 11,690.90 × 2,862.59
  4. Step 4: Simplify right side
    7,792.90x = 33,466,253.43
  5. Step 5: Solve for x
    x = 33,466,253.43/7,792.90
  6. Step 6: Final answer
    x = 4,294.45

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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.