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Finding the Fourth Proportional to 94,114.78, 129,879.48 and 51,672.40

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Solution

The fourth proportional to 94,114.78, 129,879.48 and 51,672.40 is: 71,308.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,114.78 : 129,879.48 = 51,672.40 : x
  2. Step 2: Convert to fraction form
    94,114.78/129,879.48 = 51,672.40/x
  3. Step 3: Cross multiply
    94,114.78x = 129,879.48 × 51,672.40
  4. Step 4: Simplify right side
    94,114.78x = 6,711,184,442.35
  5. Step 5: Solve for x
    x = 6,711,184,442.35/94,114.78
  6. Step 6: Final answer
    x = 71,308.51

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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.