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Finding the Fourth Proportional to 45,892.95, 68,841.11 and 12,615.62

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Solution

The fourth proportional to 45,892.95, 68,841.11 and 12,615.62 is: 18,923.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,892.95 : 68,841.11 = 12,615.62 : x
  2. Step 2: Convert to fraction form
    45,892.95/68,841.11 = 12,615.62/x
  3. Step 3: Cross multiply
    45,892.95x = 68,841.11 × 12,615.62
  4. Step 4: Simplify right side
    45,892.95x = 868,472,971.47
  5. Step 5: Solve for x
    x = 868,472,971.47/45,892.95
  6. Step 6: Final answer
    x = 18,923.89

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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.