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Finding the Fourth Proportional to 686,718.72, 1,029,792.96 and 265,752

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Solution

The fourth proportional to 686,718.72, 1,029,792.96 and 265,752 is: 398,517.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,718.72 : 1,029,792.96 = 265,752 : x
  2. Step 2: Convert to fraction form
    686,718.72/1,029,792.96 = 265,752/x
  3. Step 3: Cross multiply
    686,718.72x = 1,029,792.96 × 265,752
  4. Step 4: Simplify right side
    686,718.72x = 273,669,538,705.92
  5. Step 5: Solve for x
    x = 273,669,538,705.92/686,718.72
  6. Step 6: Final answer
    x = 398,517.66

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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.