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Finding the Fourth Proportional to 346,790.70, 520,078.05 and 136,493.10

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Solution

The fourth proportional to 346,790.70, 520,078.05 and 136,493.10 is: 204,697.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,790.70 : 520,078.05 = 136,493.10 : x
  2. Step 2: Convert to fraction form
    346,790.70/520,078.05 = 136,493.10/x
  3. Step 3: Cross multiply
    346,790.70x = 520,078.05 × 136,493.10
  4. Step 4: Simplify right side
    346,790.70x = 70,987,065,286.46
  5. Step 5: Solve for x
    x = 70,987,065,286.46/346,790.70
  6. Step 6: Final answer
    x = 204,697.14

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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.