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Finding the Fourth Proportional to 443,484.86, 665,239.57 and 127,941.75

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Solution

The fourth proportional to 443,484.86, 665,239.57 and 127,941.75 is: 191,916.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,484.86 : 665,239.57 = 127,941.75 : x
  2. Step 2: Convert to fraction form
    443,484.86/665,239.57 = 127,941.75/x
  3. Step 3: Cross multiply
    443,484.86x = 665,239.57 × 127,941.75
  4. Step 4: Simplify right side
    443,484.86x = 85,111,914,435.19
  5. Step 5: Solve for x
    x = 85,111,914,435.19/443,484.86
  6. Step 6: Final answer
    x = 191,916.17

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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.