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Finding the Fourth Proportional to 356,380.66, 534,661.56 and 103,661.15

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Solution

The fourth proportional to 356,380.66, 534,661.56 and 103,661.15 is: 155,518.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,380.66 : 534,661.56 = 103,661.15 : x
  2. Step 2: Convert to fraction form
    356,380.66/534,661.56 = 103,661.15/x
  3. Step 3: Cross multiply
    356,380.66x = 534,661.56 × 103,661.15
  4. Step 4: Simplify right side
    356,380.66x = 55,423,632,504.56
  5. Step 5: Solve for x
    x = 55,423,632,504.56/356,380.66
  6. Step 6: Final answer
    x = 155,518.07

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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.