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Finding the Fourth Proportional to 111,911.22, 154,448.64 and 83,567.70

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Solution

The fourth proportional to 111,911.22, 154,448.64 and 83,567.70 is: 115,331.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,911.22 : 154,448.64 = 83,567.70 : x
  2. Step 2: Convert to fraction form
    111,911.22/154,448.64 = 83,567.70/x
  3. Step 3: Cross multiply
    111,911.22x = 154,448.64 × 83,567.70
  4. Step 4: Simplify right side
    111,911.22x = 12,906,917,612.93
  5. Step 5: Solve for x
    x = 12,906,917,612.93/111,911.22
  6. Step 6: Final answer
    x = 115,331.76

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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.