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Finding the Fourth Proportional to 65,331.60, 97,997.40 and 18,578.40

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Solution

The fourth proportional to 65,331.60, 97,997.40 and 18,578.40 is: 27,867.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,331.60 : 97,997.40 = 18,578.40 : x
  2. Step 2: Convert to fraction form
    65,331.60/97,997.40 = 18,578.40/x
  3. Step 3: Cross multiply
    65,331.60x = 97,997.40 × 18,578.40
  4. Step 4: Simplify right side
    65,331.60x = 1,820,634,896.16
  5. Step 5: Solve for x
    x = 1,820,634,896.16/65,331.60
  6. Step 6: Final answer
    x = 27,867.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.