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Finding the Fourth Proportional to 356,842.71, 535,264.95 and 120,351.45

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Solution

The fourth proportional to 356,842.71, 535,264.95 and 120,351.45 is: 180,527.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,842.71 : 535,264.95 = 120,351.45 : x
  2. Step 2: Convert to fraction form
    356,842.71/535,264.95 = 120,351.45/x
  3. Step 3: Cross multiply
    356,842.71x = 535,264.95 × 120,351.45
  4. Step 4: Simplify right side
    356,842.71x = 64,419,912,866.68
  5. Step 5: Solve for x
    x = 64,419,912,866.68/356,842.71
  6. Step 6: Final answer
    x = 180,527.47

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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.