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Finding the Fourth Proportional to 67,075.94, 100,628.43 and 20,332.34

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Solution

The fourth proportional to 67,075.94, 100,628.43 and 20,332.34 is: 30,502.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,075.94 : 100,628.43 = 20,332.34 : x
  2. Step 2: Convert to fraction form
    67,075.94/100,628.43 = 20,332.34/x
  3. Step 3: Cross multiply
    67,075.94x = 100,628.43 × 20,332.34
  4. Step 4: Simplify right side
    67,075.94x = 2,046,011,452.43
  5. Step 5: Solve for x
    x = 2,046,011,452.43/67,075.94
  6. Step 6: Final answer
    x = 30,502.91

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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.