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Finding the Fourth Proportional to 136,641.39, 188,493.42 and 111,176.22

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Solution

The fourth proportional to 136,641.39, 188,493.42 and 111,176.22 is: 153,364.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,641.39 : 188,493.42 = 111,176.22 : x
  2. Step 2: Convert to fraction form
    136,641.39/188,493.42 = 111,176.22/x
  3. Step 3: Cross multiply
    136,641.39x = 188,493.42 × 111,176.22
  4. Step 4: Simplify right side
    136,641.39x = 20,955,985,930.47
  5. Step 5: Solve for x
    x = 20,955,985,930.47/136,641.39
  6. Step 6: Final answer
    x = 153,364.85

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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.