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Finding the Third Proportional to 312,612.75 and 484,363.13

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Solution

The third proportional to 312,612.75 and 484,363.13 is: 750,473.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,612.75 : 484,363.13 = 484,363.13 : x
  2. Step 2: Convert to fraction form
    312,612.75/484,363.13 = 484,363.13/x
  3. Step 3: Cross multiply
    312,612.75x = 484,363.13 × 484,363.13
  4. Step 4: Simplify right side
    312,612.75x = 234,607,636,859.77
  5. Step 5: Solve for x
    x = 234,607,636,859.77/312,612.75
  6. Step 6: Final answer
    x = 750,473.67

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.