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Finding the Fourth Proportional to 185,979.80, 256,649.10 and 101,099

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Solution

The fourth proportional to 185,979.80, 256,649.10 and 101,099 is: 139,514.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,979.80 : 256,649.10 = 101,099 : x
  2. Step 2: Convert to fraction form
    185,979.80/256,649.10 = 101,099/x
  3. Step 3: Cross multiply
    185,979.80x = 256,649.10 × 101,099
  4. Step 4: Simplify right side
    185,979.80x = 25,946,967,360.90
  5. Step 5: Solve for x
    x = 25,946,967,360.90/185,979.80
  6. Step 6: Final answer
    x = 139,514.98

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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.