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Finding the Fourth Proportional to 119,632.66, 165,100.56 and 65,917.66

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Solution

The fourth proportional to 119,632.66, 165,100.56 and 65,917.66 is: 90,970.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,632.66 : 165,100.56 = 65,917.66 : x
  2. Step 2: Convert to fraction form
    119,632.66/165,100.56 = 65,917.66/x
  3. Step 3: Cross multiply
    119,632.66x = 165,100.56 × 65,917.66
  4. Step 4: Simplify right side
    119,632.66x = 10,883,042,579.89
  5. Step 5: Solve for x
    x = 10,883,042,579.89/119,632.66
  6. Step 6: Final answer
    x = 90,970.50

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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.