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Finding the Fourth Proportional to 61,666.25, 92,499.38 and 20,113.25

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Solution

The fourth proportional to 61,666.25, 92,499.38 and 20,113.25 is: 30,169.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,666.25 : 92,499.38 = 20,113.25 : x
  2. Step 2: Convert to fraction form
    61,666.25/92,499.38 = 20,113.25/x
  3. Step 3: Cross multiply
    61,666.25x = 92,499.38 × 20,113.25
  4. Step 4: Simplify right side
    61,666.25x = 1,860,463,154.79
  5. Step 5: Solve for x
    x = 1,860,463,154.79/61,666.25
  6. Step 6: Final answer
    x = 30,169.88

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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.