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Finding the Fourth Proportional to 475,057.28, 655,571.80 and 260,196.68

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Solution

The fourth proportional to 475,057.28, 655,571.80 and 260,196.68 is: 359,067.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,057.28 : 655,571.80 = 260,196.68 : x
  2. Step 2: Convert to fraction form
    475,057.28/655,571.80 = 260,196.68/x
  3. Step 3: Cross multiply
    475,057.28x = 655,571.80 × 260,196.68
  4. Step 4: Simplify right side
    475,057.28x = 170,577,605,861.62
  5. Step 5: Solve for x
    x = 170,577,605,861.62/475,057.28
  6. Step 6: Final answer
    x = 359,067.45

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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.