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Finding the Fourth Proportional to 57,699.63, 86,585.90 and 22,638.51

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Solution

The fourth proportional to 57,699.63, 86,585.90 and 22,638.51 is: 33,972.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,699.63 : 86,585.90 = 22,638.51 : x
  2. Step 2: Convert to fraction form
    57,699.63/86,585.90 = 22,638.51/x
  3. Step 3: Cross multiply
    57,699.63x = 86,585.90 × 22,638.51
  4. Step 4: Simplify right side
    57,699.63x = 1,960,175,649.82
  5. Step 5: Solve for x
    x = 1,960,175,649.82/57,699.63
  6. Step 6: Final answer
    x = 33,972.07

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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.