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Finding the Fourth Proportional to 103,880.91, 155,698.32 and 47,673.66

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Solution

The fourth proportional to 103,880.91, 155,698.32 and 47,673.66 is: 71,454.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,880.91 : 155,698.32 = 47,673.66 : x
  2. Step 2: Convert to fraction form
    103,880.91/155,698.32 = 47,673.66/x
  3. Step 3: Cross multiply
    103,880.91x = 155,698.32 × 47,673.66
  4. Step 4: Simplify right side
    103,880.91x = 7,422,708,770.25
  5. Step 5: Solve for x
    x = 7,422,708,770.25/103,880.91
  6. Step 6: Final answer
    x = 71,454.02

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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.