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Finding the Fourth Proportional to 111,774.12, 154,245.15 and 61,473.12

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Solution

The fourth proportional to 111,774.12, 154,245.15 and 61,473.12 is: 84,831.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,774.12 : 154,245.15 = 61,473.12 : x
  2. Step 2: Convert to fraction form
    111,774.12/154,245.15 = 61,473.12/x
  3. Step 3: Cross multiply
    111,774.12x = 154,245.15 × 61,473.12
  4. Step 4: Simplify right side
    111,774.12x = 9,481,930,615.37
  5. Step 5: Solve for x
    x = 9,481,930,615.37/111,774.12
  6. Step 6: Final answer
    x = 84,831.18

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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.