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Finding the Fourth Proportional to 56,872.36, 85,308.54 and 29,152.68

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Solution

The fourth proportional to 56,872.36, 85,308.54 and 29,152.68 is: 43,729.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,872.36 : 85,308.54 = 29,152.68 : x
  2. Step 2: Convert to fraction form
    56,872.36/85,308.54 = 29,152.68/x
  3. Step 3: Cross multiply
    56,872.36x = 85,308.54 × 29,152.68
  4. Step 4: Simplify right side
    56,872.36x = 2,486,972,567.89
  5. Step 5: Solve for x
    x = 2,486,972,567.89/56,872.36
  6. Step 6: Final answer
    x = 43,729.02

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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.