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Finding the Fourth Proportional to 621,805, 932,731.80 and 195,631.60

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Solution

The fourth proportional to 621,805, 932,731.80 and 195,631.60 is: 293,455.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,805 : 932,731.80 = 195,631.60 : x
  2. Step 2: Convert to fraction form
    621,805/932,731.80 = 195,631.60/x
  3. Step 3: Cross multiply
    621,805x = 932,731.80 × 195,631.60
  4. Step 4: Simplify right side
    621,805x = 182,471,814,404.88
  5. Step 5: Solve for x
    x = 182,471,814,404.88/621,805
  6. Step 6: Final answer
    x = 293,455.05

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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.