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Finding the Fourth Proportional to 127,876.48, 191,933.03 and 64,740.96

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Solution

The fourth proportional to 127,876.48, 191,933.03 and 64,740.96 is: 97,171.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,876.48 : 191,933.03 = 64,740.96 : x
  2. Step 2: Convert to fraction form
    127,876.48/191,933.03 = 64,740.96/x
  3. Step 3: Cross multiply
    127,876.48x = 191,933.03 × 64,740.96
  4. Step 4: Simplify right side
    127,876.48x = 12,425,928,617.91
  5. Step 5: Solve for x
    x = 12,425,928,617.91/127,876.48
  6. Step 6: Final answer
    x = 97,171.34

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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.