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Finding the Fourth Proportional to 356,239.92, 534,360.90 and 86,367.01

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Solution

The fourth proportional to 356,239.92, 534,360.90 and 86,367.01 is: 129,550.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,239.92 : 534,360.90 = 86,367.01 : x
  2. Step 2: Convert to fraction form
    356,239.92/534,360.90 = 86,367.01/x
  3. Step 3: Cross multiply
    356,239.92x = 534,360.90 × 86,367.01
  4. Step 4: Simplify right side
    356,239.92x = 46,151,152,698.00
  5. Step 5: Solve for x
    x = 46,151,152,698.00/356,239.92
  6. Step 6: Final answer
    x = 129,550.76

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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.