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Finding the Fourth Proportional to 103,484.70, 155,086.66 and 47,255.10

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Solution

The fourth proportional to 103,484.70, 155,086.66 and 47,255.10 is: 70,818.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,484.70 : 155,086.66 = 47,255.10 : x
  2. Step 2: Convert to fraction form
    103,484.70/155,086.66 = 47,255.10/x
  3. Step 3: Cross multiply
    103,484.70x = 155,086.66 × 47,255.10
  4. Step 4: Simplify right side
    103,484.70x = 7,328,635,626.97
  5. Step 5: Solve for x
    x = 7,328,635,626.97/103,484.70
  6. Step 6: Final answer
    x = 70,818.54

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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.