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Finding the Fourth Proportional to 111,944.59, 154,365.14 and 86,455.11

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Solution

The fourth proportional to 111,944.59, 154,365.14 and 86,455.11 is: 119,216.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,944.59 : 154,365.14 = 86,455.11 : x
  2. Step 2: Convert to fraction form
    111,944.59/154,365.14 = 86,455.11/x
  3. Step 3: Cross multiply
    111,944.59x = 154,365.14 × 86,455.11
  4. Step 4: Simplify right side
    111,944.59x = 13,345,654,387.04
  5. Step 5: Solve for x
    x = 13,345,654,387.04/111,944.59
  6. Step 6: Final answer
    x = 119,216.61

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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.