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Finding the Fourth Proportional to 443,381.51, 665,170.68 and 127,813.79

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Solution

The fourth proportional to 443,381.51, 665,170.68 and 127,813.79 is: 191,749.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,381.51 : 665,170.68 = 127,813.79 : x
  2. Step 2: Convert to fraction form
    443,381.51/665,170.68 = 127,813.79/x
  3. Step 3: Cross multiply
    443,381.51x = 665,170.68 × 127,813.79
  4. Step 4: Simplify right side
    443,381.51x = 85,017,985,607.68
  5. Step 5: Solve for x
    x = 85,017,985,607.68/443,381.51
  6. Step 6: Final answer
    x = 191,749.06

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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.