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Finding the Fourth Proportional to 119,570.76, 165,008.75 and 65,855.97

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Solution

The fourth proportional to 119,570.76, 165,008.75 and 65,855.97 is: 90,881.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,570.76 : 165,008.75 = 65,855.97 : x
  2. Step 2: Convert to fraction form
    119,570.76/165,008.75 = 65,855.97/x
  3. Step 3: Cross multiply
    119,570.76x = 165,008.75 × 65,855.97
  4. Step 4: Simplify right side
    119,570.76x = 10,866,810,960.46
  5. Step 5: Solve for x
    x = 10,866,810,960.46/119,570.76
  6. Step 6: Final answer
    x = 90,881.84

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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.