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Finding the Fourth Proportional to 71,778.66, 99,047.20 and 41,573.80

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Solution

The fourth proportional to 71,778.66, 99,047.20 and 41,573.80 is: 57,367.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,778.66 : 99,047.20 = 41,573.80 : x
  2. Step 2: Convert to fraction form
    71,778.66/99,047.20 = 41,573.80/x
  3. Step 3: Cross multiply
    71,778.66x = 99,047.20 × 41,573.80
  4. Step 4: Simplify right side
    71,778.66x = 4,117,768,483.36
  5. Step 5: Solve for x
    x = 4,117,768,483.36/71,778.66
  6. Step 6: Final answer
    x = 57,367.59

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1.5x scale

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.