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Finding the Fourth Proportional to 356,926.35, 535,563.80 and 157,221.81

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Solution

The fourth proportional to 356,926.35, 535,563.80 and 157,221.81 is: 235,909.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,926.35 : 535,563.80 = 157,221.81 : x
  2. Step 2: Convert to fraction form
    356,926.35/535,563.80 = 157,221.81/x
  3. Step 3: Cross multiply
    356,926.35x = 535,563.80 × 157,221.81
  4. Step 4: Simplify right side
    356,926.35x = 84,202,309,809.95
  5. Step 5: Solve for x
    x = 84,202,309,809.95/356,926.35
  6. Step 6: Final answer
    x = 235,909.48

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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.