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Finding the Fourth Proportional to 61,898.48, 92,812.85 and 19,768.66

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Solution

The fourth proportional to 61,898.48, 92,812.85 and 19,768.66 is: 29,641.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,898.48 : 92,812.85 = 19,768.66 : x
  2. Step 2: Convert to fraction form
    61,898.48/92,812.85 = 19,768.66/x
  3. Step 3: Cross multiply
    61,898.48x = 92,812.85 × 19,768.66
  4. Step 4: Simplify right side
    61,898.48x = 1,834,785,529.74
  5. Step 5: Solve for x
    x = 1,834,785,529.74/61,898.48
  6. Step 6: Final answer
    x = 29,641.85

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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.