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Finding the Fourth Proportional to 185,801.63, 256,404.84 and 100,919.30

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Solution

The fourth proportional to 185,801.63, 256,404.84 and 100,919.30 is: 139,267.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,801.63 : 256,404.84 = 100,919.30 : x
  2. Step 2: Convert to fraction form
    185,801.63/256,404.84 = 100,919.30/x
  3. Step 3: Cross multiply
    185,801.63x = 256,404.84 × 100,919.30
  4. Step 4: Simplify right side
    185,801.63x = 25,876,196,969.41
  5. Step 5: Solve for x
    x = 25,876,196,969.41/185,801.63
  6. Step 6: Final answer
    x = 139,267.87

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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.