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Finding the Fourth Proportional to 67,534, 93,136.26 and 56,240.80

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Solution

The fourth proportional to 67,534, 93,136.26 and 56,240.80 is: 77,561.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,534 : 93,136.26 = 56,240.80 : x
  2. Step 2: Convert to fraction form
    67,534/93,136.26 = 56,240.80/x
  3. Step 3: Cross multiply
    67,534x = 93,136.26 × 56,240.80
  4. Step 4: Simplify right side
    67,534x = 5,238,057,771.41
  5. Step 5: Solve for x
    x = 5,238,057,771.41/67,534
  6. Step 6: Final answer
    x = 77,561.79

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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.