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Finding the Fourth Proportional to 69,307.92, 103,901.74 and 42,954.57

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Solution

The fourth proportional to 69,307.92, 103,901.74 and 42,954.57 is: 64,394.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,307.92 : 103,901.74 = 42,954.57 : x
  2. Step 2: Convert to fraction form
    69,307.92/103,901.74 = 42,954.57/x
  3. Step 3: Cross multiply
    69,307.92x = 103,901.74 × 42,954.57
  4. Step 4: Simplify right side
    69,307.92x = 4,463,054,456.57
  5. Step 5: Solve for x
    x = 4,463,054,456.57/69,307.92
  6. Step 6: Final answer
    x = 64,394.58

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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.