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Finding the Fourth Proportional to 100,713.68, 150,840.08 and 48,159.44

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Solution

The fourth proportional to 100,713.68, 150,840.08 and 48,159.44 is: 72,128.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,713.68 : 150,840.08 = 48,159.44 : x
  2. Step 2: Convert to fraction form
    100,713.68/150,840.08 = 48,159.44/x
  3. Step 3: Cross multiply
    100,713.68x = 150,840.08 × 48,159.44
  4. Step 4: Simplify right side
    100,713.68x = 7,264,373,782.36
  5. Step 5: Solve for x
    x = 7,264,373,782.36/100,713.68
  6. Step 6: Final answer
    x = 72,128.97

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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.