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Finding the Fourth Proportional to 58,985, 81,399.30 and 32,489

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Solution

The fourth proportional to 58,985, 81,399.30 and 32,489 is: 44,834.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,985 : 81,399.30 = 32,489 : x
  2. Step 2: Convert to fraction form
    58,985/81,399.30 = 32,489/x
  3. Step 3: Cross multiply
    58,985x = 81,399.30 × 32,489
  4. Step 4: Simplify right side
    58,985x = 2,644,581,857.70
  5. Step 5: Solve for x
    x = 2,644,581,857.70/58,985
  6. Step 6: Final answer
    x = 44,834.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.