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Finding the Fourth Proportional to 42,641.97, 63,963.10 and 13,059.67

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Solution

The fourth proportional to 42,641.97, 63,963.10 and 13,059.67 is: 19,589.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,641.97 : 63,963.10 = 13,059.67 : x
  2. Step 2: Convert to fraction form
    42,641.97/63,963.10 = 13,059.67/x
  3. Step 3: Cross multiply
    42,641.97x = 63,963.10 × 13,059.67
  4. Step 4: Simplify right side
    42,641.97x = 835,336,978.18
  5. Step 5: Solve for x
    x = 835,336,978.18/42,641.97
  6. Step 6: Final answer
    x = 19,589.55

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1.5x scale

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.