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Finding the Fourth Proportional to 187,103.26, 280,698.72 and 127,966.78

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Solution

The fourth proportional to 187,103.26, 280,698.72 and 127,966.78 is: 191,980.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,103.26 : 280,698.72 = 127,966.78 : x
  2. Step 2: Convert to fraction form
    187,103.26/280,698.72 = 127,966.78/x
  3. Step 3: Cross multiply
    187,103.26x = 280,698.72 × 127,966.78
  4. Step 4: Simplify right side
    187,103.26x = 35,920,111,348.52
  5. Step 5: Solve for x
    x = 35,920,111,348.52/187,103.26
  6. Step 6: Final answer
    x = 191,980.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.