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Finding the Fourth Proportional to 83,161.69, 124,286.74 and 60,719.63

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Solution

The fourth proportional to 83,161.69, 124,286.74 and 60,719.63 is: 90,746.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,161.69 : 124,286.74 = 60,719.63 : x
  2. Step 2: Convert to fraction form
    83,161.69/124,286.74 = 60,719.63/x
  3. Step 3: Cross multiply
    83,161.69x = 124,286.74 × 60,719.63
  4. Step 4: Simplify right side
    83,161.69x = 7,546,644,093.47
  5. Step 5: Solve for x
    x = 7,546,644,093.47/83,161.69
  6. Step 6: Final answer
    x = 90,746.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.