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Finding the Fourth Proportional to 67,954.95, 93,778.47 and 39,655.17

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Solution

The fourth proportional to 67,954.95, 93,778.47 and 39,655.17 is: 54,724.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,954.95 : 93,778.47 = 39,655.17 : x
  2. Step 2: Convert to fraction form
    67,954.95/93,778.47 = 39,655.17/x
  3. Step 3: Cross multiply
    67,954.95x = 93,778.47 × 39,655.17
  4. Step 4: Simplify right side
    67,954.95x = 3,718,801,170.19
  5. Step 5: Solve for x
    x = 3,718,801,170.19/67,954.95
  6. Step 6: Final answer
    x = 54,724.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.