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Finding the Fourth Proportional to 483,913.16, 725,396.70 and 217,740.68

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Solution

The fourth proportional to 483,913.16, 725,396.70 and 217,740.68 is: 326,398.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,913.16 : 725,396.70 = 217,740.68 : x
  2. Step 2: Convert to fraction form
    483,913.16/725,396.70 = 217,740.68/x
  3. Step 3: Cross multiply
    483,913.16x = 725,396.70 × 217,740.68
  4. Step 4: Simplify right side
    483,913.16x = 157,948,370,727.76
  5. Step 5: Solve for x
    x = 157,948,370,727.76/483,913.16
  6. Step 6: Final answer
    x = 326,398.17

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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.