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Finding the Fourth Proportional to 185,781.60, 256,375.80 and 100,897.92

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Solution

The fourth proportional to 185,781.60, 256,375.80 and 100,897.92 is: 139,237.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,781.60 : 256,375.80 = 100,897.92 : x
  2. Step 2: Convert to fraction form
    185,781.60/256,375.80 = 100,897.92/x
  3. Step 3: Cross multiply
    185,781.60x = 256,375.80 × 100,897.92
  4. Step 4: Simplify right side
    185,781.60x = 25,867,784,958.34
  5. Step 5: Solve for x
    x = 25,867,784,958.34/185,781.60
  6. Step 6: Final answer
    x = 139,237.60

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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.