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Finding the Fourth Proportional to 133,058.40, 199,879.20 and 98,221.92

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Solution

The fourth proportional to 133,058.40, 199,879.20 and 98,221.92 is: 147,548.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,058.40 : 199,879.20 = 98,221.92 : x
  2. Step 2: Convert to fraction form
    133,058.40/199,879.20 = 98,221.92/x
  3. Step 3: Cross multiply
    133,058.40x = 199,879.20 × 98,221.92
  4. Step 4: Simplify right side
    133,058.40x = 19,632,518,792.06
  5. Step 5: Solve for x
    x = 19,632,518,792.06/133,058.40
  6. Step 6: Final answer
    x = 147,548.14

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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.