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Finding the Fourth Proportional to 79,431.80, 118,966.24 and 37,907.96

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Solution

The fourth proportional to 79,431.80, 118,966.24 and 37,907.96 is: 56,775.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,431.80 : 118,966.24 = 37,907.96 : x
  2. Step 2: Convert to fraction form
    79,431.80/118,966.24 = 37,907.96/x
  3. Step 3: Cross multiply
    79,431.80x = 118,966.24 × 37,907.96
  4. Step 4: Simplify right side
    79,431.80x = 4,509,767,467.27
  5. Step 5: Solve for x
    x = 4,509,767,467.27/79,431.80
  6. Step 6: Final answer
    x = 56,775.34

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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.