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Finding the Fourth Proportional to 66,777.50, 100,176.11 and 19,392.95

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Solution

The fourth proportional to 66,777.50, 100,176.11 and 19,392.95 is: 29,092.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,777.50 : 100,176.11 = 19,392.95 : x
  2. Step 2: Convert to fraction form
    66,777.50/100,176.11 = 19,392.95/x
  3. Step 3: Cross multiply
    66,777.50x = 100,176.11 × 19,392.95
  4. Step 4: Simplify right side
    66,777.50x = 1,942,710,292.42
  5. Step 5: Solve for x
    x = 1,942,710,292.42/66,777.50
  6. Step 6: Final answer
    x = 29,092.29

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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.