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Finding the Fourth Proportional to 737,311.81, 1,105,967.25 and 421,547.32

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Solution

The fourth proportional to 737,311.81, 1,105,967.25 and 421,547.32 is: 632,320.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    737,311.81 : 1,105,967.25 = 421,547.32 : x
  2. Step 2: Convert to fraction form
    737,311.81/1,105,967.25 = 421,547.32/x
  3. Step 3: Cross multiply
    737,311.81x = 1,105,967.25 × 421,547.32
  4. Step 4: Simplify right side
    737,311.81x = 466,217,530,245.27
  5. Step 5: Solve for x
    x = 466,217,530,245.27/737,311.81
  6. Step 6: Final answer
    x = 632,320.71

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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.