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Finding the Fourth Proportional to 136,641.78, 188,422.57 and 117,586.17

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Solution

The fourth proportional to 136,641.78, 188,422.57 and 117,586.17 is: 162,145.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,641.78 : 188,422.57 = 117,586.17 : x
  2. Step 2: Convert to fraction form
    136,641.78/188,422.57 = 117,586.17/x
  3. Step 3: Cross multiply
    136,641.78x = 188,422.57 × 117,586.17
  4. Step 4: Simplify right side
    136,641.78x = 22,155,888,053.89
  5. Step 5: Solve for x
    x = 22,155,888,053.89/136,641.78
  6. Step 6: Final answer
    x = 162,145.78

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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.