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Finding the Fourth Proportional to 103,690.70, 155,420.85 and 44,516.30

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Solution

The fourth proportional to 103,690.70, 155,420.85 and 44,516.30 is: 66,724.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,690.70 : 155,420.85 = 44,516.30 : x
  2. Step 2: Convert to fraction form
    103,690.70/155,420.85 = 44,516.30/x
  3. Step 3: Cross multiply
    103,690.70x = 155,420.85 × 44,516.30
  4. Step 4: Simplify right side
    103,690.70x = 6,918,761,184.86
  5. Step 5: Solve for x
    x = 6,918,761,184.86/103,690.70
  6. Step 6: Final answer
    x = 66,724.99

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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.