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Finding the Fourth Proportional to 8,817.64, 12,168.98 and 5,828.29

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Solution

The fourth proportional to 8,817.64, 12,168.98 and 5,828.29 is: 8,043.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,817.64 : 12,168.98 = 5,828.29 : x
  2. Step 2: Convert to fraction form
    8,817.64/12,168.98 = 5,828.29/x
  3. Step 3: Cross multiply
    8,817.64x = 12,168.98 × 5,828.29
  4. Step 4: Simplify right side
    8,817.64x = 70,924,306.74
  5. Step 5: Solve for x
    x = 70,924,306.74/8,817.64
  6. Step 6: Final answer
    x = 8,043.46

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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.