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Finding the Fourth Proportional to 123,304.84, 170,160.42 and 66,716.20

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Solution

The fourth proportional to 123,304.84, 170,160.42 and 66,716.20 is: 92,068.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,304.84 : 170,160.42 = 66,716.20 : x
  2. Step 2: Convert to fraction form
    123,304.84/170,160.42 = 66,716.20/x
  3. Step 3: Cross multiply
    123,304.84x = 170,160.42 × 66,716.20
  4. Step 4: Simplify right side
    123,304.84x = 11,352,456,612.80
  5. Step 5: Solve for x
    x = 11,352,456,612.80/123,304.84
  6. Step 6: Final answer
    x = 92,068.22

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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.