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Finding the Fourth Proportional to 521,724.60, 782,894.10 and 189,257.40

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Solution

The fourth proportional to 521,724.60, 782,894.10 and 189,257.40 is: 283,997.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,724.60 : 782,894.10 = 189,257.40 : x
  2. Step 2: Convert to fraction form
    521,724.60/782,894.10 = 189,257.40/x
  3. Step 3: Cross multiply
    521,724.60x = 782,894.10 × 189,257.40
  4. Step 4: Simplify right side
    521,724.60x = 148,168,501,841.34
  5. Step 5: Solve for x
    x = 148,168,501,841.34/521,724.60
  6. Step 6: Final answer
    x = 283,997.54

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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.