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Finding the Fourth Proportional to 127,676.60, 191,514.90 and 115,429.40

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Solution

The fourth proportional to 127,676.60, 191,514.90 and 115,429.40 is: 173,144.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,676.60 : 191,514.90 = 115,429.40 : x
  2. Step 2: Convert to fraction form
    127,676.60/191,514.90 = 115,429.40/x
  3. Step 3: Cross multiply
    127,676.60x = 191,514.90 × 115,429.40
  4. Step 4: Simplify right side
    127,676.60x = 22,106,449,998.06
  5. Step 5: Solve for x
    x = 22,106,449,998.06/127,676.60
  6. Step 6: Final answer
    x = 173,144.10

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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.