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Finding the Fourth Proportional to 352,695.20, 528,265.20 and 306,039.20

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Solution

The fourth proportional to 352,695.20, 528,265.20 and 306,039.20 is: 458,384.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,695.20 : 528,265.20 = 306,039.20 : x
  2. Step 2: Convert to fraction form
    352,695.20/528,265.20 = 306,039.20/x
  3. Step 3: Cross multiply
    352,695.20x = 528,265.20 × 306,039.20
  4. Step 4: Simplify right side
    352,695.20x = 161,669,859,195.84
  5. Step 5: Solve for x
    x = 161,669,859,195.84/352,695.20
  6. Step 6: Final answer
    x = 458,384.06

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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.