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Finding the Fourth Proportional to 472,213.10, 708,528.32 and 247,519.81

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Solution

The fourth proportional to 472,213.10, 708,528.32 and 247,519.81 is: 371,389.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,213.10 : 708,528.32 = 247,519.81 : x
  2. Step 2: Convert to fraction form
    472,213.10/708,528.32 = 247,519.81/x
  3. Step 3: Cross multiply
    472,213.10x = 708,528.32 × 247,519.81
  4. Step 4: Simplify right side
    472,213.10x = 175,374,794,457.60
  5. Step 5: Solve for x
    x = 175,374,794,457.60/472,213.10
  6. Step 6: Final answer
    x = 371,389.09

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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.