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Finding the Fourth Proportional to 356,223.94, 534,336.99 and 86,351.01

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Solution

The fourth proportional to 356,223.94, 534,336.99 and 86,351.01 is: 129,526.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,223.94 : 534,336.99 = 86,351.01 : x
  2. Step 2: Convert to fraction form
    356,223.94/534,336.99 = 86,351.01/x
  3. Step 3: Cross multiply
    356,223.94x = 534,336.99 × 86,351.01
  4. Step 4: Simplify right side
    356,223.94x = 46,140,539,444.93
  5. Step 5: Solve for x
    x = 46,140,539,444.93/356,223.94
  6. Step 6: Final answer
    x = 129,526.78

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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.