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Finding the Fourth Proportional to 60,426.92, 90,642.16 and 28,840.31

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Solution

The fourth proportional to 60,426.92, 90,642.16 and 28,840.31 is: 43,261.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,426.92 : 90,642.16 = 28,840.31 : x
  2. Step 2: Convert to fraction form
    60,426.92/90,642.16 = 28,840.31/x
  3. Step 3: Cross multiply
    60,426.92x = 90,642.16 × 28,840.31
  4. Step 4: Simplify right side
    60,426.92x = 2,614,147,540.26
  5. Step 5: Solve for x
    x = 2,614,147,540.26/60,426.92
  6. Step 6: Final answer
    x = 43,261.31

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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.