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Finding the Fourth Proportional to 251,268.72, 346,775.22 and 143,854.08

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Solution

The fourth proportional to 251,268.72, 346,775.22 and 143,854.08 is: 198,532.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,268.72 : 346,775.22 = 143,854.08 : x
  2. Step 2: Convert to fraction form
    251,268.72/346,775.22 = 143,854.08/x
  3. Step 3: Cross multiply
    251,268.72x = 346,775.22 × 143,854.08
  4. Step 4: Simplify right side
    251,268.72x = 49,885,030,239.90
  5. Step 5: Solve for x
    x = 49,885,030,239.90/251,268.72
  6. Step 6: Final answer
    x = 198,532.59

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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.