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Finding the Fourth Proportional to 100,723.15, 150,911.93 and 48,019.15

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Solution

The fourth proportional to 100,723.15, 150,911.93 and 48,019.15 is: 71,946.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,723.15 : 150,911.93 = 48,019.15 : x
  2. Step 2: Convert to fraction form
    100,723.15/150,911.93 = 48,019.15/x
  3. Step 3: Cross multiply
    100,723.15x = 150,911.93 × 48,019.15
  4. Step 4: Simplify right side
    100,723.15x = 7,246,662,363.36
  5. Step 5: Solve for x
    x = 7,246,662,363.36/100,723.15
  6. Step 6: Final answer
    x = 71,946.34

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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.