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Finding the Fourth Proportional to 127,673.91, 191,261.73 and 99,461.87

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Solution

The fourth proportional to 127,673.91, 191,261.73 and 99,461.87 is: 148,998.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,673.91 : 191,261.73 = 99,461.87 : x
  2. Step 2: Convert to fraction form
    127,673.91/191,261.73 = 99,461.87/x
  3. Step 3: Cross multiply
    127,673.91x = 191,261.73 × 99,461.87
  4. Step 4: Simplify right side
    127,673.91x = 19,023,250,255.25
  5. Step 5: Solve for x
    x = 19,023,250,255.25/127,673.91
  6. Step 6: Final answer
    x = 148,998.73

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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.