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Finding the Fourth Proportional to 185,862.67, 256,493.64 and 100,979.80

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Solution

The fourth proportional to 185,862.67, 256,493.64 and 100,979.80 is: 139,353.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,862.67 : 256,493.64 = 100,979.80 : x
  2. Step 2: Convert to fraction form
    185,862.67/256,493.64 = 100,979.80/x
  3. Step 3: Cross multiply
    185,862.67x = 256,493.64 × 100,979.80
  4. Step 4: Simplify right side
    185,862.67x = 25,900,676,468.47
  5. Step 5: Solve for x
    x = 25,900,676,468.47/185,862.67
  6. Step 6: Final answer
    x = 139,353.84

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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.