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Finding the Fourth Proportional to 158,827.50, 219,181.95 and 91,759.50

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Solution

The fourth proportional to 158,827.50, 219,181.95 and 91,759.50 is: 126,628.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,827.50 : 219,181.95 = 91,759.50 : x
  2. Step 2: Convert to fraction form
    158,827.50/219,181.95 = 91,759.50/x
  3. Step 3: Cross multiply
    158,827.50x = 219,181.95 × 91,759.50
  4. Step 4: Simplify right side
    158,827.50x = 20,112,026,141.03
  5. Step 5: Solve for x
    x = 20,112,026,141.03/158,827.50
  6. Step 6: Final answer
    x = 126,628.11

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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.