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Finding the Fourth Proportional to 56,580.90, 84,809.39 and 28,456.08

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Solution

The fourth proportional to 56,580.90, 84,809.39 and 28,456.08 is: 42,652.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,580.90 : 84,809.39 = 28,456.08 : x
  2. Step 2: Convert to fraction form
    56,580.90/84,809.39 = 28,456.08/x
  3. Step 3: Cross multiply
    56,580.90x = 84,809.39 × 28,456.08
  4. Step 4: Simplify right side
    56,580.90x = 2,413,342,644.31
  5. Step 5: Solve for x
    x = 2,413,342,644.31/56,580.90
  6. Step 6: Final answer
    x = 42,652.96

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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.