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Finding the Fourth Proportional to 262,406.10, 393,803.55 and 104,747.70

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Solution

The fourth proportional to 262,406.10, 393,803.55 and 104,747.70 is: 157,199.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,406.10 : 393,803.55 = 104,747.70 : x
  2. Step 2: Convert to fraction form
    262,406.10/393,803.55 = 104,747.70/x
  3. Step 3: Cross multiply
    262,406.10x = 393,803.55 × 104,747.70
  4. Step 4: Simplify right side
    262,406.10x = 41,250,016,114.34
  5. Step 5: Solve for x
    x = 41,250,016,114.34/262,406.10
  6. Step 6: Final answer
    x = 157,199.15

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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.