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Finding the Fourth Proportional to 111,998.60, 168,012.30 and 55,867.40

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Solution

The fourth proportional to 111,998.60, 168,012.30 and 55,867.40 is: 83,808.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,998.60 : 168,012.30 = 55,867.40 : x
  2. Step 2: Convert to fraction form
    111,998.60/168,012.30 = 55,867.40/x
  3. Step 3: Cross multiply
    111,998.60x = 168,012.30 × 55,867.40
  4. Step 4: Simplify right side
    111,998.60x = 9,386,410,369.02
  5. Step 5: Solve for x
    x = 9,386,410,369.02/111,998.60
  6. Step 6: Final answer
    x = 83,808.28

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1.5x scale

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.