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Finding the Fourth Proportional to 479,279.72, 718,893.66 and 146,856.68

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Solution

The fourth proportional to 479,279.72, 718,893.66 and 146,856.68 is: 220,277.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,279.72 : 718,893.66 = 146,856.68 : x
  2. Step 2: Convert to fraction form
    479,279.72/718,893.66 = 146,856.68/x
  3. Step 3: Cross multiply
    479,279.72x = 718,893.66 × 146,856.68
  4. Step 4: Simplify right side
    479,279.72x = 105,574,336,180.65
  5. Step 5: Solve for x
    x = 105,574,336,180.65/479,279.72
  6. Step 6: Final answer
    x = 220,277.08

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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.