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Finding the Fourth Proportional to 56,479.82, 84,728.88 and 19,043.24

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Solution

The fourth proportional to 56,479.82, 84,728.88 and 19,043.24 is: 28,567.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,479.82 : 84,728.88 = 19,043.24 : x
  2. Step 2: Convert to fraction form
    56,479.82/84,728.88 = 19,043.24/x
  3. Step 3: Cross multiply
    56,479.82x = 84,728.88 × 19,043.24
  4. Step 4: Simplify right side
    56,479.82x = 1,613,512,396.77
  5. Step 5: Solve for x
    x = 1,613,512,396.77/56,479.82
  6. Step 6: Final answer
    x = 28,567.95

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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.