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Finding the Fourth Proportional to 103,188.12, 154,764.90 and 47,010.84

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Solution

The fourth proportional to 103,188.12, 154,764.90 and 47,010.84 is: 70,508.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,188.12 : 154,764.90 = 47,010.84 : x
  2. Step 2: Convert to fraction form
    103,188.12/154,764.90 = 47,010.84/x
  3. Step 3: Cross multiply
    103,188.12x = 154,764.90 × 47,010.84
  4. Step 4: Simplify right side
    103,188.12x = 7,275,627,951.52
  5. Step 5: Solve for x
    x = 7,275,627,951.52/103,188.12
  6. Step 6: Final answer
    x = 70,508.39

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1.5x scale

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.