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Finding the Fourth Proportional to 111,649.92, 154,076.80 and 61,348.88

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Solution

The fourth proportional to 111,649.92, 154,076.80 and 61,348.88 is: 84,661.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,649.92 : 154,076.80 = 61,348.88 : x
  2. Step 2: Convert to fraction form
    111,649.92/154,076.80 = 61,348.88/x
  3. Step 3: Cross multiply
    111,649.92x = 154,076.80 × 61,348.88
  4. Step 4: Simplify right side
    111,649.92x = 9,452,439,113.98
  5. Step 5: Solve for x
    x = 9,452,439,113.98/111,649.92
  6. Step 6: Final answer
    x = 84,661.41

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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.