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Finding the Fourth Proportional to 79,260.84, 118,780.32 and 56,969.64

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Solution

The fourth proportional to 79,260.84, 118,780.32 and 56,969.64 is: 85,374.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,260.84 : 118,780.32 = 56,969.64 : x
  2. Step 2: Convert to fraction form
    79,260.84/118,780.32 = 56,969.64/x
  3. Step 3: Cross multiply
    79,260.84x = 118,780.32 × 56,969.64
  4. Step 4: Simplify right side
    79,260.84x = 6,766,872,069.48
  5. Step 5: Solve for x
    x = 6,766,872,069.48/79,260.84
  6. Step 6: Final answer
    x = 85,374.72

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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.