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Finding the Fourth Proportional to 306,721.20, 460,103.40 and 173,665.20

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Solution

The fourth proportional to 306,721.20, 460,103.40 and 173,665.20 is: 260,510.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,721.20 : 460,103.40 = 173,665.20 : x
  2. Step 2: Convert to fraction form
    306,721.20/460,103.40 = 173,665.20/x
  3. Step 3: Cross multiply
    306,721.20x = 460,103.40 × 173,665.20
  4. Step 4: Simplify right side
    306,721.20x = 79,903,948,981.68
  5. Step 5: Solve for x
    x = 79,903,948,981.68/306,721.20
  6. Step 6: Final answer
    x = 260,510.03

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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.