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Finding the Fourth Proportional to 427,031.90, 589,278.69 and 236,033.90

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Solution

The fourth proportional to 427,031.90, 589,278.69 and 236,033.90 is: 325,712.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,031.90 : 589,278.69 = 236,033.90 : x
  2. Step 2: Convert to fraction form
    427,031.90/589,278.69 = 236,033.90/x
  3. Step 3: Cross multiply
    427,031.90x = 589,278.69 × 236,033.90
  4. Step 4: Simplify right side
    427,031.90x = 139,089,747,387.59
  5. Step 5: Solve for x
    x = 139,089,747,387.59/427,031.90
  6. Step 6: Final answer
    x = 325,712.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.