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Finding the Fourth Proportional to 356,933.96, 535,230.09 and 207,215.58

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Solution

The fourth proportional to 356,933.96, 535,230.09 and 207,215.58 is: 310,724.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,933.96 : 535,230.09 = 207,215.58 : x
  2. Step 2: Convert to fraction form
    356,933.96/535,230.09 = 207,215.58/x
  3. Step 3: Cross multiply
    356,933.96x = 535,230.09 × 207,215.58
  4. Step 4: Simplify right side
    356,933.96x = 110,908,013,532.80
  5. Step 5: Solve for x
    x = 110,908,013,532.80/356,933.96
  6. Step 6: Final answer
    x = 310,724.19

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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.