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Finding the Fourth Proportional to 127,866.40, 191,799.60 and 125,679.40

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Solution

The fourth proportional to 127,866.40, 191,799.60 and 125,679.40 is: 188,519.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,866.40 : 191,799.60 = 125,679.40 : x
  2. Step 2: Convert to fraction form
    127,866.40/191,799.60 = 125,679.40/x
  3. Step 3: Cross multiply
    127,866.40x = 191,799.60 × 125,679.40
  4. Step 4: Simplify right side
    127,866.40x = 24,105,258,648.24
  5. Step 5: Solve for x
    x = 24,105,258,648.24/127,866.40
  6. Step 6: Final answer
    x = 188,519.10

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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.