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Finding the Fourth Proportional to 123,907.59, 170,991.27 and 67,318.92

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Solution

The fourth proportional to 123,907.59, 170,991.27 and 67,318.92 is: 92,899.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,907.59 : 170,991.27 = 67,318.92 : x
  2. Step 2: Convert to fraction form
    123,907.59/170,991.27 = 67,318.92/x
  3. Step 3: Cross multiply
    123,907.59x = 170,991.27 × 67,318.92
  4. Step 4: Simplify right side
    123,907.59x = 11,510,947,625.83
  5. Step 5: Solve for x
    x = 11,510,947,625.83/123,907.59
  6. Step 6: Final answer
    x = 92,899.46

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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.