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Finding the Fourth Proportional to 448,640.76, 672,934.74 and 168,134.52

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Solution

The fourth proportional to 448,640.76, 672,934.74 and 168,134.52 is: 252,191.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,640.76 : 672,934.74 = 168,134.52 : x
  2. Step 2: Convert to fraction form
    448,640.76/672,934.74 = 168,134.52/x
  3. Step 3: Cross multiply
    448,640.76x = 672,934.74 × 168,134.52
  4. Step 4: Simplify right side
    448,640.76x = 113,143,559,501.23
  5. Step 5: Solve for x
    x = 113,143,559,501.23/448,640.76
  6. Step 6: Final answer
    x = 252,191.89

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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.