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Finding the Fourth Proportional to 56,921.32, 85,373.96 and 35,796.96

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Solution

The fourth proportional to 56,921.32, 85,373.96 and 35,796.96 is: 53,690.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,921.32 : 85,373.96 = 35,796.96 : x
  2. Step 2: Convert to fraction form
    56,921.32/85,373.96 = 35,796.96/x
  3. Step 3: Cross multiply
    56,921.32x = 85,373.96 × 35,796.96
  4. Step 4: Simplify right side
    56,921.32x = 3,056,128,231.16
  5. Step 5: Solve for x
    x = 3,056,128,231.16/56,921.32
  6. Step 6: Final answer
    x = 53,690.40

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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.