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Finding the Fourth Proportional to 40,618.56, 60,937.68 and 12,916.56

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Solution

The fourth proportional to 40,618.56, 60,937.68 and 12,916.56 is: 19,377.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,618.56 : 60,937.68 = 12,916.56 : x
  2. Step 2: Convert to fraction form
    40,618.56/60,937.68 = 12,916.56/x
  3. Step 3: Cross multiply
    40,618.56x = 60,937.68 × 12,916.56
  4. Step 4: Simplify right side
    40,618.56x = 787,105,199.98
  5. Step 5: Solve for x
    x = 787,105,199.98/40,618.56
  6. Step 6: Final answer
    x = 19,377.97

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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.