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Finding the Fourth Proportional to 100,483.77, 150,646.72 and 68,797.98

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Solution

The fourth proportional to 100,483.77, 150,646.72 and 68,797.98 is: 103,142.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,483.77 : 150,646.72 = 68,797.98 : x
  2. Step 2: Convert to fraction form
    100,483.77/150,646.72 = 68,797.98/x
  3. Step 3: Cross multiply
    100,483.77x = 150,646.72 × 68,797.98
  4. Step 4: Simplify right side
    100,483.77x = 10,364,190,011.10
  5. Step 5: Solve for x
    x = 10,364,190,011.10/100,483.77
  6. Step 6: Final answer
    x = 103,142.93

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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.