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Finding the Fourth Proportional to 75,817.92, 104,572.32 and 55,668.48

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Solution

The fourth proportional to 75,817.92, 104,572.32 and 55,668.48 is: 76,781.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,817.92 : 104,572.32 = 55,668.48 : x
  2. Step 2: Convert to fraction form
    75,817.92/104,572.32 = 55,668.48/x
  3. Step 3: Cross multiply
    75,817.92x = 104,572.32 × 55,668.48
  4. Step 4: Simplify right side
    75,817.92x = 5,821,382,104.47
  5. Step 5: Solve for x
    x = 5,821,382,104.47/75,817.92
  6. Step 6: Final answer
    x = 76,781.08

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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.