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Finding the Fourth Proportional to 475,087.90, 655,621.56 and 260,231.52

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Solution

The fourth proportional to 475,087.90, 655,621.56 and 260,231.52 is: 359,119.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,087.90 : 655,621.56 = 260,231.52 : x
  2. Step 2: Convert to fraction form
    475,087.90/655,621.56 = 260,231.52/x
  3. Step 3: Cross multiply
    475,087.90x = 655,621.56 × 260,231.52
  4. Step 4: Simplify right side
    475,087.90x = 170,613,395,103.57
  5. Step 5: Solve for x
    x = 170,613,395,103.57/475,087.90
  6. Step 6: Final answer
    x = 359,119.64

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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.