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Finding the Fourth Proportional to 71,136.33, 98,213.90 and 45,653.68

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Solution

The fourth proportional to 71,136.33, 98,213.90 and 45,653.68 is: 63,031.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,136.33 : 98,213.90 = 45,653.68 : x
  2. Step 2: Convert to fraction form
    71,136.33/98,213.90 = 45,653.68/x
  3. Step 3: Cross multiply
    71,136.33x = 98,213.90 × 45,653.68
  4. Step 4: Simplify right side
    71,136.33x = 4,483,826,582.28
  5. Step 5: Solve for x
    x = 4,483,826,582.28/71,136.33
  6. Step 6: Final answer
    x = 63,031.45

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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.