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Finding the Fourth Proportional to 69,211.80, 103,671.90 and 69,211.80

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Solution

The fourth proportional to 69,211.80, 103,671.90 and 69,211.80 is: 103,671.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,211.80 : 103,671.90 = 69,211.80 : x
  2. Step 2: Convert to fraction form
    69,211.80/103,671.90 = 69,211.80/x
  3. Step 3: Cross multiply
    69,211.80x = 103,671.90 × 69,211.80
  4. Step 4: Simplify right side
    69,211.80x = 7,175,318,808.42
  5. Step 5: Solve for x
    x = 7,175,318,808.42/69,211.80
  6. Step 6: Final answer
    x = 103,671.90

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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.