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Finding the Fourth Proportional to 379,957.50, 524,295.99 and 210,168.54

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Solution

The fourth proportional to 379,957.50, 524,295.99 and 210,168.54 is: 290,007.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,957.50 : 524,295.99 = 210,168.54 : x
  2. Step 2: Convert to fraction form
    379,957.50/524,295.99 = 210,168.54/x
  3. Step 3: Cross multiply
    379,957.50x = 524,295.99 × 210,168.54
  4. Step 4: Simplify right side
    379,957.50x = 110,190,522,746.16
  5. Step 5: Solve for x
    x = 110,190,522,746.16/379,957.50
  6. Step 6: Final answer
    x = 290,007.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.