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Finding the Fourth Proportional to 58,358.10, 80,530.90 and 34,487

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Solution

The fourth proportional to 58,358.10, 80,530.90 and 34,487 is: 47,590.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,358.10 : 80,530.90 = 34,487 : x
  2. Step 2: Convert to fraction form
    58,358.10/80,530.90 = 34,487/x
  3. Step 3: Cross multiply
    58,358.10x = 80,530.90 × 34,487
  4. Step 4: Simplify right side
    58,358.10x = 2,777,269,148.30
  5. Step 5: Solve for x
    x = 2,777,269,148.30/58,358.10
  6. Step 6: Final answer
    x = 47,590.12

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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.