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Finding the Fourth Proportional to 57,907.28, 79,911.28 and 32,756.78

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Solution

The fourth proportional to 57,907.28, 79,911.28 and 32,756.78 is: 45,203.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,907.28 : 79,911.28 = 32,756.78 : x
  2. Step 2: Convert to fraction form
    57,907.28/79,911.28 = 32,756.78/x
  3. Step 3: Cross multiply
    57,907.28x = 79,911.28 × 32,756.78
  4. Step 4: Simplify right side
    57,907.28x = 2,617,636,218.48
  5. Step 5: Solve for x
    x = 2,617,636,218.48/57,907.28
  6. Step 6: Final answer
    x = 45,203.92

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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.