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Finding the Fourth Proportional to 61,937.76, 92,906.16 and 20,384.64

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Solution

The fourth proportional to 61,937.76, 92,906.16 and 20,384.64 is: 30,576.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,937.76 : 92,906.16 = 20,384.64 : x
  2. Step 2: Convert to fraction form
    61,937.76/92,906.16 = 20,384.64/x
  3. Step 3: Cross multiply
    61,937.76x = 92,906.16 × 20,384.64
  4. Step 4: Simplify right side
    61,937.76x = 1,893,858,625.38
  5. Step 5: Solve for x
    x = 1,893,858,625.38/61,937.76
  6. Step 6: Final answer
    x = 30,576.80

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1.5x scale

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.