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Finding the Fourth Proportional to 121,959.05, 183,016.65 and 65,838.24

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Solution

The fourth proportional to 121,959.05, 183,016.65 and 65,838.24 is: 98,799.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,959.05 : 183,016.65 = 65,838.24 : x
  2. Step 2: Convert to fraction form
    121,959.05/183,016.65 = 65,838.24/x
  3. Step 3: Cross multiply
    121,959.05x = 183,016.65 × 65,838.24
  4. Step 4: Simplify right side
    121,959.05x = 12,049,494,126.70
  5. Step 5: Solve for x
    x = 12,049,494,126.70/121,959.05
  6. Step 6: Final answer
    x = 98,799.51

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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.