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Finding the Fourth Proportional to 400,818.72, 601,237.80 and 134,587.92

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Solution

The fourth proportional to 400,818.72, 601,237.80 and 134,587.92 is: 201,885.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,818.72 : 601,237.80 = 134,587.92 : x
  2. Step 2: Convert to fraction form
    400,818.72/601,237.80 = 134,587.92/x
  3. Step 3: Cross multiply
    400,818.72x = 601,237.80 × 134,587.92
  4. Step 4: Simplify right side
    400,818.72x = 80,919,344,927.38
  5. Step 5: Solve for x
    x = 80,919,344,927.38/400,818.72
  6. Step 6: Final answer
    x = 201,885.14

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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.