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Finding the Fourth Proportional to 356,663.28, 534,989.58 and 86,793.96

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Solution

The fourth proportional to 356,663.28, 534,989.58 and 86,793.96 is: 130,189.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,663.28 : 534,989.58 = 86,793.96 : x
  2. Step 2: Convert to fraction form
    356,663.28/534,989.58 = 86,793.96/x
  3. Step 3: Cross multiply
    356,663.28x = 534,989.58 × 86,793.96
  4. Step 4: Simplify right side
    356,663.28x = 46,433,864,206.94
  5. Step 5: Solve for x
    x = 46,433,864,206.94/356,663.28
  6. Step 6: Final answer
    x = 130,189.64

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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.