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Finding the Fourth Proportional to 45,894.95, 68,844.11 and 12,617.62

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Solution

The fourth proportional to 45,894.95, 68,844.11 and 12,617.62 is: 18,926.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,894.95 : 68,844.11 = 12,617.62 : x
  2. Step 2: Convert to fraction form
    45,894.95/68,844.11 = 12,617.62/x
  3. Step 3: Cross multiply
    45,894.95x = 68,844.11 × 12,617.62
  4. Step 4: Simplify right side
    45,894.95x = 868,648,819.22
  5. Step 5: Solve for x
    x = 868,648,819.22/45,894.95
  6. Step 6: Final answer
    x = 18,926.89

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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.