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Finding the Fourth Proportional to 262,388.48, 393,728.48 and 162,602.88

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Solution

The fourth proportional to 262,388.48, 393,728.48 and 162,602.88 is: 243,994.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,388.48 : 393,728.48 = 162,602.88 : x
  2. Step 2: Convert to fraction form
    262,388.48/393,728.48 = 162,602.88/x
  3. Step 3: Cross multiply
    262,388.48x = 393,728.48 × 162,602.88
  4. Step 4: Simplify right side
    262,388.48x = 64,021,384,786.02
  5. Step 5: Solve for x
    x = 64,021,384,786.02/262,388.48
  6. Step 6: Final answer
    x = 243,994.65

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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.