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Finding the Fourth Proportional to 65,395.37, 89,655.95 and 64,214.39

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Solution

The fourth proportional to 65,395.37, 89,655.95 and 64,214.39 is: 88,036.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,395.37 : 89,655.95 = 64,214.39 : x
  2. Step 2: Convert to fraction form
    65,395.37/89,655.95 = 64,214.39/x
  3. Step 3: Cross multiply
    65,395.37x = 89,655.95 × 64,214.39
  4. Step 4: Simplify right side
    65,395.37x = 5,757,202,523.80
  5. Step 5: Solve for x
    x = 5,757,202,523.80/65,395.37
  6. Step 6: Final answer
    x = 88,036.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.