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Finding the Fourth Proportional to 85,990.32, 129,022.44 and 44,466.48

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Solution

The fourth proportional to 85,990.32, 129,022.44 and 44,466.48 is: 66,718.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,990.32 : 129,022.44 = 44,466.48 : x
  2. Step 2: Convert to fraction form
    85,990.32/129,022.44 = 44,466.48/x
  3. Step 3: Cross multiply
    85,990.32x = 129,022.44 × 44,466.48
  4. Step 4: Simplify right side
    85,990.32x = 5,737,173,747.81
  5. Step 5: Solve for x
    x = 5,737,173,747.81/85,990.32
  6. Step 6: Final answer
    x = 66,718.83

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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.