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Finding the Fourth Proportional to 69,913.50, 96,487.92 and 39,706.98

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Solution

The fourth proportional to 69,913.50, 96,487.92 and 39,706.98 is: 54,799.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,913.50 : 96,487.92 = 39,706.98 : x
  2. Step 2: Convert to fraction form
    69,913.50/96,487.92 = 39,706.98/x
  3. Step 3: Cross multiply
    69,913.50x = 96,487.92 × 39,706.98
  4. Step 4: Simplify right side
    69,913.50x = 3,831,243,909.68
  5. Step 5: Solve for x
    x = 3,831,243,909.68/69,913.50
  6. Step 6: Final answer
    x = 54,799.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.