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Finding the Fourth Proportional to 123,672.99, 170,669.13 and 67,084.77

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Solution

The fourth proportional to 123,672.99, 170,669.13 and 67,084.77 is: 92,577.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,672.99 : 170,669.13 = 67,084.77 : x
  2. Step 2: Convert to fraction form
    123,672.99/170,669.13 = 67,084.77/x
  3. Step 3: Cross multiply
    123,672.99x = 170,669.13 × 67,084.77
  4. Step 4: Simplify right side
    123,672.99x = 11,449,299,332.15
  5. Step 5: Solve for x
    x = 11,449,299,332.15/123,672.99
  6. Step 6: Final answer
    x = 92,577.20

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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.