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Finding the Fourth Proportional to 386,494.68, 533,092.80 and 373,489.32

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Solution

The fourth proportional to 386,494.68, 533,092.80 and 373,489.32 is: 515,154.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,494.68 : 533,092.80 = 373,489.32 : x
  2. Step 2: Convert to fraction form
    386,494.68/533,092.80 = 373,489.32/x
  3. Step 3: Cross multiply
    386,494.68x = 533,092.80 × 373,489.32
  4. Step 4: Simplify right side
    386,494.68x = 199,104,467,368.90
  5. Step 5: Solve for x
    x = 199,104,467,368.90/386,494.68
  6. Step 6: Final answer
    x = 515,154.48

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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.