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Finding the Fourth Proportional to 225,669.14, 338,495.48 and 90,774.98

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Solution

The fourth proportional to 225,669.14, 338,495.48 and 90,774.98 is: 136,159.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,669.14 : 338,495.48 = 90,774.98 : x
  2. Step 2: Convert to fraction form
    225,669.14/338,495.48 = 90,774.98/x
  3. Step 3: Cross multiply
    225,669.14x = 338,495.48 × 90,774.98
  4. Step 4: Simplify right side
    225,669.14x = 30,726,920,427.09
  5. Step 5: Solve for x
    x = 30,726,920,427.09/225,669.14
  6. Step 6: Final answer
    x = 136,159.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.