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Finding the Fourth Proportional to 253,705.58, 350,098.68 and 138,961.34

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Solution

The fourth proportional to 253,705.58, 350,098.68 and 138,961.34 is: 191,758.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,705.58 : 350,098.68 = 138,961.34 : x
  2. Step 2: Convert to fraction form
    253,705.58/350,098.68 = 138,961.34/x
  3. Step 3: Cross multiply
    253,705.58x = 350,098.68 × 138,961.34
  4. Step 4: Simplify right side
    253,705.58x = 48,650,181,705.03
  5. Step 5: Solve for x
    x = 48,650,181,705.03/253,705.58
  6. Step 6: Final answer
    x = 191,758.42

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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.