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Finding the Fourth Proportional to 358,715.70, 537,879.15 and 148,115.70

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Solution

The fourth proportional to 358,715.70, 537,879.15 and 148,115.70 is: 222,093.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,715.70 : 537,879.15 = 148,115.70 : x
  2. Step 2: Convert to fraction form
    358,715.70/537,879.15 = 148,115.70/x
  3. Step 3: Cross multiply
    358,715.70x = 537,879.15 × 148,115.70
  4. Step 4: Simplify right side
    358,715.70x = 79,668,346,817.66
  5. Step 5: Solve for x
    x = 79,668,346,817.66/358,715.70
  6. Step 6: Final answer
    x = 222,093.28

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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.