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Finding the Fourth Proportional to 61,808.46, 92,681.61 and 30,220.86

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Solution

The fourth proportional to 61,808.46, 92,681.61 and 30,220.86 is: 45,316.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,808.46 : 92,681.61 = 30,220.86 : x
  2. Step 2: Convert to fraction form
    61,808.46/92,681.61 = 30,220.86/x
  3. Step 3: Cross multiply
    61,808.46x = 92,681.61 × 30,220.86
  4. Step 4: Simplify right side
    61,808.46x = 2,800,917,960.38
  5. Step 5: Solve for x
    x = 2,800,917,960.38/61,808.46
  6. Step 6: Final answer
    x = 45,316.09

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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.