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Finding the Fourth Proportional to 45,478.56, 68,222.58 and 17,398.56

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Solution

The fourth proportional to 45,478.56, 68,222.58 and 17,398.56 is: 26,099.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,478.56 : 68,222.58 = 17,398.56 : x
  2. Step 2: Convert to fraction form
    45,478.56/68,222.58 = 17,398.56/x
  3. Step 3: Cross multiply
    45,478.56x = 68,222.58 × 17,398.56
  4. Step 4: Simplify right side
    45,478.56x = 1,186,974,651.48
  5. Step 5: Solve for x
    x = 1,186,974,651.48/45,478.56
  6. Step 6: Final answer
    x = 26,099.65

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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.