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Finding the Fourth Proportional to 65,908.13, 90,953.28 and 35,693.49

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Solution

The fourth proportional to 65,908.13, 90,953.28 and 35,693.49 is: 49,257.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,908.13 : 90,953.28 = 35,693.49 : x
  2. Step 2: Convert to fraction form
    65,908.13/90,953.28 = 35,693.49/x
  3. Step 3: Cross multiply
    65,908.13x = 90,953.28 × 35,693.49
  4. Step 4: Simplify right side
    65,908.13x = 3,246,439,990.15
  5. Step 5: Solve for x
    x = 3,246,439,990.15/65,908.13
  6. Step 6: Final answer
    x = 49,257.05

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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.