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Finding the Fourth Proportional to 56,581.64, 84,830.54 and 28,481.12

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Solution

The fourth proportional to 56,581.64, 84,830.54 and 28,481.12 is: 42,700.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,581.64 : 84,830.54 = 28,481.12 : x
  2. Step 2: Convert to fraction form
    56,581.64/84,830.54 = 28,481.12/x
  3. Step 3: Cross multiply
    56,581.64x = 84,830.54 × 28,481.12
  4. Step 4: Simplify right side
    56,581.64x = 2,416,068,222.85
  5. Step 5: Solve for x
    x = 2,416,068,222.85/56,581.64
  6. Step 6: Final answer
    x = 42,700.57

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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.