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Finding the Fourth Proportional to 258,618.60, 357,117.93 and 190,753.20

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Solution

The fourth proportional to 258,618.60, 357,117.93 and 190,753.20 is: 263,404.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,618.60 : 357,117.93 = 190,753.20 : x
  2. Step 2: Convert to fraction form
    258,618.60/357,117.93 = 190,753.20/x
  3. Step 3: Cross multiply
    258,618.60x = 357,117.93 × 190,753.20
  4. Step 4: Simplify right side
    258,618.60x = 68,121,387,924.88
  5. Step 5: Solve for x
    x = 68,121,387,924.88/258,618.60
  6. Step 6: Final answer
    x = 263,404.83

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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.