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Finding the Fourth Proportional to 616,810.20, 925,215.30 and 196,128.60

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Solution

The fourth proportional to 616,810.20, 925,215.30 and 196,128.60 is: 294,192.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,810.20 : 925,215.30 = 196,128.60 : x
  2. Step 2: Convert to fraction form
    616,810.20/925,215.30 = 196,128.60/x
  3. Step 3: Cross multiply
    616,810.20x = 925,215.30 × 196,128.60
  4. Step 4: Simplify right side
    616,810.20x = 181,461,181,487.58
  5. Step 5: Solve for x
    x = 181,461,181,487.58/616,810.20
  6. Step 6: Final answer
    x = 294,192.90

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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.