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Finding the Fourth Proportional to 45,406.70, 67,980.45 and 44,110.70

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Solution

The fourth proportional to 45,406.70, 67,980.45 and 44,110.70 is: 66,040.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,406.70 : 67,980.45 = 44,110.70 : x
  2. Step 2: Convert to fraction form
    45,406.70/67,980.45 = 44,110.70/x
  3. Step 3: Cross multiply
    45,406.70x = 67,980.45 × 44,110.70
  4. Step 4: Simplify right side
    45,406.70x = 2,998,665,235.82
  5. Step 5: Solve for x
    x = 2,998,665,235.82/45,406.70
  6. Step 6: Final answer
    x = 66,040.15

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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.