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Finding the Fourth Proportional to 127,934.40, 191,997.60 and 65,572.80

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Solution

The fourth proportional to 127,934.40, 191,997.60 and 65,572.80 is: 98,408.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,934.40 : 191,997.60 = 65,572.80 : x
  2. Step 2: Convert to fraction form
    127,934.40/191,997.60 = 65,572.80/x
  3. Step 3: Cross multiply
    127,934.40x = 191,997.60 × 65,572.80
  4. Step 4: Simplify right side
    127,934.40x = 12,589,820,225.28
  5. Step 5: Solve for x
    x = 12,589,820,225.28/127,934.40
  6. Step 6: Final answer
    x = 98,408.40

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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.