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Finding the Fourth Proportional to 468,468.78, 646,487.13 and 253,608.85

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Solution

The fourth proportional to 468,468.78, 646,487.13 and 253,608.85 is: 349,980.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,468.78 : 646,487.13 = 253,608.85 : x
  2. Step 2: Convert to fraction form
    468,468.78/646,487.13 = 253,608.85/x
  3. Step 3: Cross multiply
    468,468.78x = 646,487.13 × 253,608.85
  4. Step 4: Simplify right side
    468,468.78x = 163,954,854,346.67
  5. Step 5: Solve for x
    x = 163,954,854,346.67/468,468.78
  6. Step 6: Final answer
    x = 349,980.32

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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.