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Finding the Fourth Proportional to 65,634.44, 90,543.98 and 42,963.44

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Solution

The fourth proportional to 65,634.44, 90,543.98 and 42,963.44 is: 59,268.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,634.44 : 90,543.98 = 42,963.44 : x
  2. Step 2: Convert to fraction form
    65,634.44/90,543.98 = 42,963.44/x
  3. Step 3: Cross multiply
    65,634.44x = 90,543.98 × 42,963.44
  4. Step 4: Simplify right side
    65,634.44x = 3,890,080,852.09
  5. Step 5: Solve for x
    x = 3,890,080,852.09/65,634.44
  6. Step 6: Final answer
    x = 59,268.90

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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.