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Finding the Fourth Proportional to 111,219.40, 153,493.77 and 63,479.94

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Solution

The fourth proportional to 111,219.40, 153,493.77 and 63,479.94 is: 87,608.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,219.40 : 153,493.77 = 63,479.94 : x
  2. Step 2: Convert to fraction form
    111,219.40/153,493.77 = 63,479.94/x
  3. Step 3: Cross multiply
    111,219.40x = 153,493.77 × 63,479.94
  4. Step 4: Simplify right side
    111,219.40x = 9,743,775,309.97
  5. Step 5: Solve for x
    x = 9,743,775,309.97/111,219.40
  6. Step 6: Final answer
    x = 87,608.59

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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.