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Finding the Fourth Proportional to 119,398.60, 179,215.26 and 91,055.08

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Solution

The fourth proportional to 119,398.60, 179,215.26 and 91,055.08 is: 136,672.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,398.60 : 179,215.26 = 91,055.08 : x
  2. Step 2: Convert to fraction form
    119,398.60/179,215.26 = 91,055.08/x
  3. Step 3: Cross multiply
    119,398.60x = 179,215.26 × 91,055.08
  4. Step 4: Simplify right side
    119,398.60x = 16,318,459,836.52
  5. Step 5: Solve for x
    x = 16,318,459,836.52/119,398.60
  6. Step 6: Final answer
    x = 136,672.12

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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.