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Finding the Fourth Proportional to 91,720.98, 126,587.94 and 50,894.28

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Solution

The fourth proportional to 91,720.98, 126,587.94 and 50,894.28 is: 70,241.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,720.98 : 126,587.94 = 50,894.28 : x
  2. Step 2: Convert to fraction form
    91,720.98/126,587.94 = 50,894.28/x
  3. Step 3: Cross multiply
    91,720.98x = 126,587.94 × 50,894.28
  4. Step 4: Simplify right side
    91,720.98x = 6,442,602,062.98
  5. Step 5: Solve for x
    x = 6,442,602,062.98/91,720.98
  6. Step 6: Final answer
    x = 70,241.31

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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.