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Finding the Fourth Proportional to 443,529.68, 665,221.71 and 123,703.30

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Solution

The fourth proportional to 443,529.68, 665,221.71 and 123,703.30 is: 185,534.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,529.68 : 665,221.71 = 123,703.30 : x
  2. Step 2: Convert to fraction form
    443,529.68/665,221.71 = 123,703.30/x
  3. Step 3: Cross multiply
    443,529.68x = 665,221.71 × 123,703.30
  4. Step 4: Simplify right side
    443,529.68x = 82,290,122,054.06
  5. Step 5: Solve for x
    x = 82,290,122,054.06/443,529.68
  6. Step 6: Final answer
    x = 185,534.65

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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.