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Finding the Fourth Proportional to 69,881.94, 96,427.26 and 39,657.60

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Solution

The fourth proportional to 69,881.94, 96,427.26 and 39,657.60 is: 54,721.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,881.94 : 96,427.26 = 39,657.60 : x
  2. Step 2: Convert to fraction form
    69,881.94/96,427.26 = 39,657.60/x
  3. Step 3: Cross multiply
    69,881.94x = 96,427.26 × 39,657.60
  4. Step 4: Simplify right side
    69,881.94x = 3,824,073,706.18
  5. Step 5: Solve for x
    x = 3,824,073,706.18/69,881.94
  6. Step 6: Final answer
    x = 54,721.92

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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.