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Finding the Fourth Proportional to 447,778.34, 671,690.56 and 127,904.98

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Solution

The fourth proportional to 447,778.34, 671,690.56 and 127,904.98 is: 191,864.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,778.34 : 671,690.56 = 127,904.98 : x
  2. Step 2: Convert to fraction form
    447,778.34/671,690.56 = 127,904.98/x
  3. Step 3: Cross multiply
    447,778.34x = 671,690.56 × 127,904.98
  4. Step 4: Simplify right side
    447,778.34x = 85,912,567,642.99
  5. Step 5: Solve for x
    x = 85,912,567,642.99/447,778.34
  6. Step 6: Final answer
    x = 191,864.05

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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.