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Finding the Fourth Proportional to 393,649.95, 590,568.66 and 127,410.47

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Solution

The fourth proportional to 393,649.95, 590,568.66 and 127,410.47 is: 191,146.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,649.95 : 590,568.66 = 127,410.47 : x
  2. Step 2: Convert to fraction form
    393,649.95/590,568.66 = 127,410.47/x
  3. Step 3: Cross multiply
    393,649.95x = 590,568.66 × 127,410.47
  4. Step 4: Simplify right side
    393,649.95x = 75,244,627,585.03
  5. Step 5: Solve for x
    x = 75,244,627,585.03/393,649.95
  6. Step 6: Final answer
    x = 191,146.04

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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.