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Finding the Fourth Proportional to 127,816.60, 191,723.10 and 57,695.80

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Solution

The fourth proportional to 127,816.60, 191,723.10 and 57,695.80 is: 86,542.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,816.60 : 191,723.10 = 57,695.80 : x
  2. Step 2: Convert to fraction form
    127,816.60/191,723.10 = 57,695.80/x
  3. Step 3: Cross multiply
    127,816.60x = 191,723.10 × 57,695.80
  4. Step 4: Simplify right side
    127,816.60x = 11,061,617,632.98
  5. Step 5: Solve for x
    x = 11,061,617,632.98/127,816.60
  6. Step 6: Final answer
    x = 86,542.89

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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.