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Finding the Fourth Proportional to 119,653.95, 165,122.09 and 65,938.95

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Solution

The fourth proportional to 119,653.95, 165,122.09 and 65,938.95 is: 90,995.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,653.95 : 165,122.09 = 65,938.95 : x
  2. Step 2: Convert to fraction form
    119,653.95/165,122.09 = 65,938.95/x
  3. Step 3: Cross multiply
    119,653.95x = 165,122.09 × 65,938.95
  4. Step 4: Simplify right side
    119,653.95x = 10,887,977,236.41
  5. Step 5: Solve for x
    x = 10,887,977,236.41/119,653.95
  6. Step 6: Final answer
    x = 90,995.55

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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.