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Finding the Fourth Proportional to 222,909.70, 307,615.34 and 127,418.45

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Solution

The fourth proportional to 222,909.70, 307,615.34 and 127,418.45 is: 175,837.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,909.70 : 307,615.34 = 127,418.45 : x
  2. Step 2: Convert to fraction form
    222,909.70/307,615.34 = 127,418.45/x
  3. Step 3: Cross multiply
    222,909.70x = 307,615.34 × 127,418.45
  4. Step 4: Simplify right side
    222,909.70x = 39,195,869,181.93
  5. Step 5: Solve for x
    x = 39,195,869,181.93/222,909.70
  6. Step 6: Final answer
    x = 175,837.43

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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.