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Finding the Fourth Proportional to 257,906.10, 386,531.10 and 124,499.10

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Solution

The fourth proportional to 257,906.10, 386,531.10 and 124,499.10 is: 186,590.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,906.10 : 386,531.10 = 124,499.10 : x
  2. Step 2: Convert to fraction form
    257,906.10/386,531.10 = 124,499.10/x
  3. Step 3: Cross multiply
    257,906.10x = 386,531.10 × 124,499.10
  4. Step 4: Simplify right side
    257,906.10x = 48,122,774,072.01
  5. Step 5: Solve for x
    x = 48,122,774,072.01/257,906.10
  6. Step 6: Final answer
    x = 186,590.29

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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.