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Finding the Fourth Proportional to 65,983.68, 91,025.28 and 37,681.92

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Solution

The fourth proportional to 65,983.68, 91,025.28 and 37,681.92 is: 51,982.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,983.68 : 91,025.28 = 37,681.92 : x
  2. Step 2: Convert to fraction form
    65,983.68/91,025.28 = 37,681.92/x
  3. Step 3: Cross multiply
    65,983.68x = 91,025.28 × 37,681.92
  4. Step 4: Simplify right side
    65,983.68x = 3,430,007,318.94
  5. Step 5: Solve for x
    x = 3,430,007,318.94/65,983.68
  6. Step 6: Final answer
    x = 51,982.66

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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.