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Finding the Fourth Proportional to 68,707.70, 103,061.55 and 33,715.70

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Solution

The fourth proportional to 68,707.70, 103,061.55 and 33,715.70 is: 50,573.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,707.70 : 103,061.55 = 33,715.70 : x
  2. Step 2: Convert to fraction form
    68,707.70/103,061.55 = 33,715.70/x
  3. Step 3: Cross multiply
    68,707.70x = 103,061.55 × 33,715.70
  4. Step 4: Simplify right side
    68,707.70x = 3,474,792,301.34
  5. Step 5: Solve for x
    x = 3,474,792,301.34/68,707.70
  6. Step 6: Final answer
    x = 50,573.55

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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.