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Finding the Fourth Proportional to 231,568.80, 319,627.80 and 136,106.16

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Solution

The fourth proportional to 231,568.80, 319,627.80 and 136,106.16 is: 187,863.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,568.80 : 319,627.80 = 136,106.16 : x
  2. Step 2: Convert to fraction form
    231,568.80/319,627.80 = 136,106.16/x
  3. Step 3: Cross multiply
    231,568.80x = 319,627.80 × 136,106.16
  4. Step 4: Simplify right side
    231,568.80x = 43,503,312,487.25
  5. Step 5: Solve for x
    x = 43,503,312,487.25/231,568.80
  6. Step 6: Final answer
    x = 187,863.44

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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.