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Finding the Fourth Proportional to 119,573.92, 165,012 and 65,858.48

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Solution

The fourth proportional to 119,573.92, 165,012 and 65,858.48 is: 90,884.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,573.92 : 165,012 = 65,858.48 : x
  2. Step 2: Convert to fraction form
    119,573.92/165,012 = 65,858.48/x
  3. Step 3: Cross multiply
    119,573.92x = 165,012 × 65,858.48
  4. Step 4: Simplify right side
    119,573.92x = 10,867,439,501.76
  5. Step 5: Solve for x
    x = 10,867,439,501.76/119,573.92
  6. Step 6: Final answer
    x = 90,884.70

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1.5x scale

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.