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Finding the Fourth Proportional to 262,116.80, 393,466.80 and 162,389.60

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Solution

The fourth proportional to 262,116.80, 393,466.80 and 162,389.60 is: 243,765.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,116.80 : 393,466.80 = 162,389.60 : x
  2. Step 2: Convert to fraction form
    262,116.80/393,466.80 = 162,389.60/x
  3. Step 3: Cross multiply
    262,116.80x = 393,466.80 × 162,389.60
  4. Step 4: Simplify right side
    262,116.80x = 63,894,916,265.28
  5. Step 5: Solve for x
    x = 63,894,916,265.28/262,116.80
  6. Step 6: Final answer
    x = 243,765.06

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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.