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Finding the Fourth Proportional to 92,572, 138,829.20 and 33,399.92

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Solution

The fourth proportional to 92,572, 138,829.20 and 33,399.92 is: 50,089.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,572 : 138,829.20 = 33,399.92 : x
  2. Step 2: Convert to fraction form
    92,572/138,829.20 = 33,399.92/x
  3. Step 3: Cross multiply
    92,572x = 138,829.20 × 33,399.92
  4. Step 4: Simplify right side
    92,572x = 4,636,884,173.66
  5. Step 5: Solve for x
    x = 4,636,884,173.66/92,572
  6. Step 6: Final answer
    x = 50,089.49

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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.