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Finding the Fourth Proportional to 65,805.20, 98,756.40 and 43,611.20

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Solution

The fourth proportional to 65,805.20, 98,756.40 and 43,611.20 is: 65,449.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,805.20 : 98,756.40 = 43,611.20 : x
  2. Step 2: Convert to fraction form
    65,805.20/98,756.40 = 43,611.20/x
  3. Step 3: Cross multiply
    65,805.20x = 98,756.40 × 43,611.20
  4. Step 4: Simplify right side
    65,805.20x = 4,306,885,111.68
  5. Step 5: Solve for x
    x = 4,306,885,111.68/65,805.20
  6. Step 6: Final answer
    x = 65,449.01

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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.