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Finding the Fourth Proportional to 127,672.80, 191,509.20 and 113,894.70

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Solution

The fourth proportional to 127,672.80, 191,509.20 and 113,894.70 is: 170,842.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,672.80 : 191,509.20 = 113,894.70 : x
  2. Step 2: Convert to fraction form
    127,672.80/191,509.20 = 113,894.70/x
  3. Step 3: Cross multiply
    127,672.80x = 191,509.20 × 113,894.70
  4. Step 4: Simplify right side
    127,672.80x = 21,811,882,881.24
  5. Step 5: Solve for x
    x = 21,811,882,881.24/127,672.80
  6. Step 6: Final answer
    x = 170,842.05

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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.