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Finding the Fourth Proportional to 346,658.20, 520,060.20 and 196,775.80

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Solution

The fourth proportional to 346,658.20, 520,060.20 and 196,775.80 is: 295,205.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,658.20 : 520,060.20 = 196,775.80 : x
  2. Step 2: Convert to fraction form
    346,658.20/520,060.20 = 196,775.80/x
  3. Step 3: Cross multiply
    346,658.20x = 520,060.20 × 196,775.80
  4. Step 4: Simplify right side
    346,658.20x = 102,335,261,903.16
  5. Step 5: Solve for x
    x = 102,335,261,903.16/346,658.20
  6. Step 6: Final answer
    x = 295,205.08

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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.