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Finding the Fourth Proportional to 127,679.76, 191,550.66 and 38,934.84

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Solution

The fourth proportional to 127,679.76, 191,550.66 and 38,934.84 is: 58,411.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,679.76 : 191,550.66 = 38,934.84 : x
  2. Step 2: Convert to fraction form
    127,679.76/191,550.66 = 38,934.84/x
  3. Step 3: Cross multiply
    127,679.76x = 191,550.66 × 38,934.84
  4. Step 4: Simplify right side
    127,679.76x = 7,457,994,298.99
  5. Step 5: Solve for x
    x = 7,457,994,298.99/127,679.76
  6. Step 6: Final answer
    x = 58,411.72

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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.