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Finding the Fourth Proportional to 8,468.50, 11,686.89 and 4,931.14

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Solution

The fourth proportional to 8,468.50, 11,686.89 and 4,931.14 is: 6,805.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,468.50 : 11,686.89 = 4,931.14 : x
  2. Step 2: Convert to fraction form
    8,468.50/11,686.89 = 4,931.14/x
  3. Step 3: Cross multiply
    8,468.50x = 11,686.89 × 4,931.14
  4. Step 4: Simplify right side
    8,468.50x = 57,629,690.75
  5. Step 5: Solve for x
    x = 57,629,690.75/8,468.50
  6. Step 6: Final answer
    x = 6,805.18

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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.