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Finding the Fourth Proportional to 111,201.92, 153,473.56 and 65,876.40

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Solution

The fourth proportional to 111,201.92, 153,473.56 and 65,876.40 is: 90,918.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,201.92 : 153,473.56 = 65,876.40 : x
  2. Step 2: Convert to fraction form
    111,201.92/153,473.56 = 65,876.40/x
  3. Step 3: Cross multiply
    111,201.92x = 153,473.56 × 65,876.40
  4. Step 4: Simplify right side
    111,201.92x = 10,110,285,627.98
  5. Step 5: Solve for x
    x = 10,110,285,627.98/111,201.92
  6. Step 6: Final answer
    x = 90,918.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.