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Finding the Fourth Proportional to 610,424.60, 915,723.30 and 189,656.60

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Solution

The fourth proportional to 610,424.60, 915,723.30 and 189,656.60 is: 284,511.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,424.60 : 915,723.30 = 189,656.60 : x
  2. Step 2: Convert to fraction form
    610,424.60/915,723.30 = 189,656.60/x
  3. Step 3: Cross multiply
    610,424.60x = 915,723.30 × 189,656.60
  4. Step 4: Simplify right side
    610,424.60x = 173,672,967,618.78
  5. Step 5: Solve for x
    x = 173,672,967,618.78/610,424.60
  6. Step 6: Final answer
    x = 284,511.74

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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.