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Finding the Fourth Proportional to 119,628.07, 165,094.09 and 65,913.07

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Solution

The fourth proportional to 119,628.07, 165,094.09 and 65,913.07 is: 90,964.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,628.07 : 165,094.09 = 65,913.07 : x
  2. Step 2: Convert to fraction form
    119,628.07/165,094.09 = 65,913.07/x
  3. Step 3: Cross multiply
    119,628.07x = 165,094.09 × 65,913.07
  4. Step 4: Simplify right side
    119,628.07x = 10,881,858,310.76
  5. Step 5: Solve for x
    x = 10,881,858,310.76/119,628.07
  6. Step 6: Final answer
    x = 90,964.09

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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.