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Finding the Fourth Proportional to 65,953.21, 91,017.12 and 37,661.53

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Solution

The fourth proportional to 65,953.21, 91,017.12 and 37,661.53 is: 51,973.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,953.21 : 91,017.12 = 37,661.53 : x
  2. Step 2: Convert to fraction form
    65,953.21/91,017.12 = 37,661.53/x
  3. Step 3: Cross multiply
    65,953.21x = 91,017.12 × 37,661.53
  4. Step 4: Simplify right side
    65,953.21x = 3,427,843,995.39
  5. Step 5: Solve for x
    x = 3,427,843,995.39/65,953.21
  6. Step 6: Final answer
    x = 51,973.88

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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.