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Finding the Fourth Proportional to 228,646.04, 342,986.81 and 68,709.49

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Solution

The fourth proportional to 228,646.04, 342,986.81 and 68,709.49 is: 103,069.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,646.04 : 342,986.81 = 68,709.49 : x
  2. Step 2: Convert to fraction form
    228,646.04/342,986.81 = 68,709.49/x
  3. Step 3: Cross multiply
    228,646.04x = 342,986.81 × 68,709.49
  4. Step 4: Simplify right side
    228,646.04x = 23,566,449,649.29
  5. Step 5: Solve for x
    x = 23,566,449,649.29/228,646.04
  6. Step 6: Final answer
    x = 103,069.57

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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.