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Finding the Fourth Proportional to 65,911.57, 90,957.51 and 35,696.20

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Solution

The fourth proportional to 65,911.57, 90,957.51 and 35,696.20 is: 49,260.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,911.57 : 90,957.51 = 35,696.20 : x
  2. Step 2: Convert to fraction form
    65,911.57/90,957.51 = 35,696.20/x
  3. Step 3: Cross multiply
    65,911.57x = 90,957.51 × 35,696.20
  4. Step 4: Simplify right side
    65,911.57x = 3,246,837,468.46
  5. Step 5: Solve for x
    x = 3,246,837,468.46/65,911.57
  6. Step 6: Final answer
    x = 49,260.51

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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.