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Finding the Fourth Proportional to 103,592.68, 155,200.86 and 47,479.48

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Solution

The fourth proportional to 103,592.68, 155,200.86 and 47,479.48 is: 71,132.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,592.68 : 155,200.86 = 47,479.48 : x
  2. Step 2: Convert to fraction form
    103,592.68/155,200.86 = 47,479.48/x
  3. Step 3: Cross multiply
    103,592.68x = 155,200.86 × 47,479.48
  4. Step 4: Simplify right side
    103,592.68x = 7,368,856,128.35
  5. Step 5: Solve for x
    x = 7,368,856,128.35/103,592.68
  6. Step 6: Final answer
    x = 71,132.98

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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.