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Finding the Fourth Proportional to 119,810.61, 165,339.90 and 66,097.62

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Solution

The fourth proportional to 119,810.61, 165,339.90 and 66,097.62 is: 91,215.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,810.61 : 165,339.90 = 66,097.62 : x
  2. Step 2: Convert to fraction form
    119,810.61/165,339.90 = 66,097.62/x
  3. Step 3: Cross multiply
    119,810.61x = 165,339.90 × 66,097.62
  4. Step 4: Simplify right side
    119,810.61x = 10,928,573,881.04
  5. Step 5: Solve for x
    x = 10,928,573,881.04/119,810.61
  6. Step 6: Final answer
    x = 91,215.41

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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.