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Finding the Fourth Proportional to 183,718.60, 275,286.30 and 121,316.20

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Solution

The fourth proportional to 183,718.60, 275,286.30 and 121,316.20 is: 181,781.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,718.60 : 275,286.30 = 121,316.20 : x
  2. Step 2: Convert to fraction form
    183,718.60/275,286.30 = 121,316.20/x
  3. Step 3: Cross multiply
    183,718.60x = 275,286.30 × 121,316.20
  4. Step 4: Simplify right side
    183,718.60x = 33,396,687,828.06
  5. Step 5: Solve for x
    x = 33,396,687,828.06/183,718.60
  6. Step 6: Final answer
    x = 181,781.75

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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.