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Finding the Fourth Proportional to 85,940.94, 118,592.89 and 47,698.64

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Solution

The fourth proportional to 85,940.94, 118,592.89 and 47,698.64 is: 65,821.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,940.94 : 118,592.89 = 47,698.64 : x
  2. Step 2: Convert to fraction form
    85,940.94/118,592.89 = 47,698.64/x
  3. Step 3: Cross multiply
    85,940.94x = 118,592.89 × 47,698.64
  4. Step 4: Simplify right side
    85,940.94x = 5,656,719,867.95
  5. Step 5: Solve for x
    x = 5,656,719,867.95/85,940.94
  6. Step 6: Final answer
    x = 65,821.01

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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.