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Finding the Fourth Proportional to 57,787.36, 79,751.28 and 32,641.60

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Solution

The fourth proportional to 57,787.36, 79,751.28 and 32,641.60 is: 45,048.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,787.36 : 79,751.28 = 32,641.60 : x
  2. Step 2: Convert to fraction form
    57,787.36/79,751.28 = 32,641.60/x
  3. Step 3: Cross multiply
    57,787.36x = 79,751.28 × 32,641.60
  4. Step 4: Simplify right side
    57,787.36x = 2,603,209,381.25
  5. Step 5: Solve for x
    x = 2,603,209,381.25/57,787.36
  6. Step 6: Final answer
    x = 45,048.08

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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.