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Finding the Fourth Proportional to 220,071.16, 303,705.48 and 124,575.88

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Solution

The fourth proportional to 220,071.16, 303,705.48 and 124,575.88 is: 171,918.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,071.16 : 303,705.48 = 124,575.88 : x
  2. Step 2: Convert to fraction form
    220,071.16/303,705.48 = 124,575.88/x
  3. Step 3: Cross multiply
    220,071.16x = 303,705.48 × 124,575.88
  4. Step 4: Simplify right side
    220,071.16x = 37,834,377,431.82
  5. Step 5: Solve for x
    x = 37,834,377,431.82/220,071.16
  6. Step 6: Final answer
    x = 171,918.83

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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.