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Finding the Fourth Proportional to 526,369.20, 789,546.50 and 127,006.64

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Solution

The fourth proportional to 526,369.20, 789,546.50 and 127,006.64 is: 190,508.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,369.20 : 789,546.50 = 127,006.64 : x
  2. Step 2: Convert to fraction form
    526,369.20/789,546.50 = 127,006.64/x
  3. Step 3: Cross multiply
    526,369.20x = 789,546.50 × 127,006.64
  4. Step 4: Simplify right side
    526,369.20x = 100,277,648,088.76
  5. Step 5: Solve for x
    x = 100,277,648,088.76/526,369.20
  6. Step 6: Final answer
    x = 190,508.20

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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.