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Finding the Fourth Proportional to 47,211.80, 70,790.70 and 17,630.60

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Solution

The fourth proportional to 47,211.80, 70,790.70 and 17,630.60 is: 26,435.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,211.80 : 70,790.70 = 17,630.60 : x
  2. Step 2: Convert to fraction form
    47,211.80/70,790.70 = 17,630.60/x
  3. Step 3: Cross multiply
    47,211.80x = 70,790.70 × 17,630.60
  4. Step 4: Simplify right side
    47,211.80x = 1,248,082,515.42
  5. Step 5: Solve for x
    x = 1,248,082,515.42/47,211.80
  6. Step 6: Final answer
    x = 26,435.82

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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.