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Finding the Fourth Proportional to 56,772.60, 85,167.90 and 19,336.20

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Solution

The fourth proportional to 56,772.60, 85,167.90 and 19,336.20 is: 29,007.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,772.60 : 85,167.90 = 19,336.20 : x
  2. Step 2: Convert to fraction form
    56,772.60/85,167.90 = 19,336.20/x
  3. Step 3: Cross multiply
    56,772.60x = 85,167.90 × 19,336.20
  4. Step 4: Simplify right side
    56,772.60x = 1,646,823,547.98
  5. Step 5: Solve for x
    x = 1,646,823,547.98/56,772.60
  6. Step 6: Final answer
    x = 29,007.37

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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.