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Finding the Fourth Proportional to 47,269.70, 70,904.55 and 45,665.90

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Solution

The fourth proportional to 47,269.70, 70,904.55 and 45,665.90 is: 68,498.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,269.70 : 70,904.55 = 45,665.90 : x
  2. Step 2: Convert to fraction form
    47,269.70/70,904.55 = 45,665.90/x
  3. Step 3: Cross multiply
    47,269.70x = 70,904.55 × 45,665.90
  4. Step 4: Simplify right side
    47,269.70x = 3,237,920,089.85
  5. Step 5: Solve for x
    x = 3,237,920,089.85/47,269.70
  6. Step 6: Final answer
    x = 68,498.85

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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.