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Finding the Fourth Proportional to 127,760.60, 191,713.80 and 48,931.40

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Solution

The fourth proportional to 127,760.60, 191,713.80 and 48,931.40 is: 73,425.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,760.60 : 191,713.80 = 48,931.40 : x
  2. Step 2: Convert to fraction form
    127,760.60/191,713.80 = 48,931.40/x
  3. Step 3: Cross multiply
    127,760.60x = 191,713.80 × 48,931.40
  4. Step 4: Simplify right side
    127,760.60x = 9,380,824,633.32
  5. Step 5: Solve for x
    x = 9,380,824,633.32/127,760.60
  6. Step 6: Final answer
    x = 73,425.02

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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.