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Finding the Fourth Proportional to 111,634.62, 154,051.11 and 66,316.74

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Solution

The fourth proportional to 111,634.62, 154,051.11 and 66,316.74 is: 91,514.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,634.62 : 154,051.11 = 66,316.74 : x
  2. Step 2: Convert to fraction form
    111,634.62/154,051.11 = 66,316.74/x
  3. Step 3: Cross multiply
    111,634.62x = 154,051.11 × 66,316.74
  4. Step 4: Simplify right side
    111,634.62x = 10,216,167,408.58
  5. Step 5: Solve for x
    x = 10,216,167,408.58/111,634.62
  6. Step 6: Final answer
    x = 91,514.33

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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.