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Finding the Fourth Proportional to 100,708.90, 150,890.55 and 48,004.90

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Solution

The fourth proportional to 100,708.90, 150,890.55 and 48,004.90 is: 71,924.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,708.90 : 150,890.55 = 48,004.90 : x
  2. Step 2: Convert to fraction form
    100,708.90/150,890.55 = 48,004.90/x
  3. Step 3: Cross multiply
    100,708.90x = 150,890.55 × 48,004.90
  4. Step 4: Simplify right side
    100,708.90x = 7,243,485,763.70
  5. Step 5: Solve for x
    x = 7,243,485,763.70/100,708.90
  6. Step 6: Final answer
    x = 71,924.98

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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.