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Finding the Fourth Proportional to 245,135.10, 367,658.88 and 65,221.56

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Solution

The fourth proportional to 245,135.10, 367,658.88 and 65,221.56 is: 97,820.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,135.10 : 367,658.88 = 65,221.56 : x
  2. Step 2: Convert to fraction form
    245,135.10/367,658.88 = 65,221.56/x
  3. Step 3: Cross multiply
    245,135.10x = 367,658.88 × 65,221.56
  4. Step 4: Simplify right side
    245,135.10x = 23,979,285,701.45
  5. Step 5: Solve for x
    x = 23,979,285,701.45/245,135.10
  6. Step 6: Final answer
    x = 97,820.69

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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.