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Finding the Fourth Proportional to 85,773.88, 128,656.86 and 23,444.20

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Solution

The fourth proportional to 85,773.88, 128,656.86 and 23,444.20 is: 35,165.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,773.88 : 128,656.86 = 23,444.20 : x
  2. Step 2: Convert to fraction form
    85,773.88/128,656.86 = 23,444.20/x
  3. Step 3: Cross multiply
    85,773.88x = 128,656.86 × 23,444.20
  4. Step 4: Simplify right side
    85,773.88x = 3,016,257,157.21
  5. Step 5: Solve for x
    x = 3,016,257,157.21/85,773.88
  6. Step 6: Final answer
    x = 35,165.22

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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.