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Finding the Fourth Proportional to 251,633.90, 347,248.41 and 136,907.66

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Solution

The fourth proportional to 251,633.90, 347,248.41 and 136,907.66 is: 188,929.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,633.90 : 347,248.41 = 136,907.66 : x
  2. Step 2: Convert to fraction form
    251,633.90/347,248.41 = 136,907.66/x
  3. Step 3: Cross multiply
    251,633.90x = 347,248.41 × 136,907.66
  4. Step 4: Simplify right side
    251,633.90x = 47,540,967,251.82
  5. Step 5: Solve for x
    x = 47,540,967,251.82/251,633.90
  6. Step 6: Final answer
    x = 188,929.10

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1.5x scale

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.