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Finding the Fourth Proportional to 61,709.70, 92,490.36 and 28,383.84

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Solution

The fourth proportional to 61,709.70, 92,490.36 and 28,383.84 is: 42,541.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,709.70 : 92,490.36 = 28,383.84 : x
  2. Step 2: Convert to fraction form
    61,709.70/92,490.36 = 28,383.84/x
  3. Step 3: Cross multiply
    61,709.70x = 92,490.36 × 28,383.84
  4. Step 4: Simplify right side
    61,709.70x = 2,625,231,579.78
  5. Step 5: Solve for x
    x = 2,625,231,579.78/61,709.70
  6. Step 6: Final answer
    x = 42,541.64

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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.