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Finding the Fourth Proportional to 56,591.79, 84,924.54 and 21,531.75

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Solution

The fourth proportional to 56,591.79, 84,924.54 and 21,531.75 is: 32,311.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,591.79 : 84,924.54 = 21,531.75 : x
  2. Step 2: Convert to fraction form
    56,591.79/84,924.54 = 21,531.75/x
  3. Step 3: Cross multiply
    56,591.79x = 84,924.54 × 21,531.75
  4. Step 4: Simplify right side
    56,591.79x = 1,828,573,431.86
  5. Step 5: Solve for x
    x = 1,828,573,431.86/56,591.79
  6. Step 6: Final answer
    x = 32,311.64

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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.