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Finding the Fourth Proportional to 69,307.25, 103,973.67 and 21,934.26

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Solution

The fourth proportional to 69,307.25, 103,973.67 and 21,934.26 is: 32,905.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,307.25 : 103,973.67 = 21,934.26 : x
  2. Step 2: Convert to fraction form
    69,307.25/103,973.67 = 21,934.26/x
  3. Step 3: Cross multiply
    69,307.25x = 103,973.67 × 21,934.26
  4. Step 4: Simplify right side
    69,307.25x = 2,280,585,510.93
  5. Step 5: Solve for x
    x = 2,280,585,510.93/69,307.25
  6. Step 6: Final answer
    x = 32,905.44

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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.