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Finding the Fourth Proportional to 111,555.86, 153,946.77 and 66,843.86

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Solution

The fourth proportional to 111,555.86, 153,946.77 and 66,843.86 is: 92,244.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,555.86 : 153,946.77 = 66,843.86 : x
  2. Step 2: Convert to fraction form
    111,555.86/153,946.77 = 66,843.86/x
  3. Step 3: Cross multiply
    111,555.86x = 153,946.77 × 66,843.86
  4. Step 4: Simplify right side
    111,555.86x = 10,290,396,341.33
  5. Step 5: Solve for x
    x = 10,290,396,341.33/111,555.86
  6. Step 6: Final answer
    x = 92,244.34

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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.