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Finding the Fourth Proportional to 220,111.05, 330,123.29 and 70,310.98

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Solution

The fourth proportional to 220,111.05, 330,123.29 and 70,310.98 is: 105,452.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,111.05 : 330,123.29 = 70,310.98 : x
  2. Step 2: Convert to fraction form
    220,111.05/330,123.29 = 70,310.98/x
  3. Step 3: Cross multiply
    220,111.05x = 330,123.29 × 70,310.98
  4. Step 4: Simplify right side
    220,111.05x = 23,211,290,863.86
  5. Step 5: Solve for x
    x = 23,211,290,863.86/220,111.05
  6. Step 6: Final answer
    x = 105,452.64

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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.