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Finding the Fourth Proportional to 346,550.20, 520,359.90 and 189,086.20

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Solution

The fourth proportional to 346,550.20, 520,359.90 and 189,086.20 is: 283,920.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,550.20 : 520,359.90 = 189,086.20 : x
  2. Step 2: Convert to fraction form
    346,550.20/520,359.90 = 189,086.20/x
  3. Step 3: Cross multiply
    346,550.20x = 520,359.90 × 189,086.20
  4. Step 4: Simplify right side
    346,550.20x = 98,392,876,123.38
  5. Step 5: Solve for x
    x = 98,392,876,123.38/346,550.20
  6. Step 6: Final answer
    x = 283,920.99

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1.5x scale

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.