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Finding the Fourth Proportional to 91,159.50, 125,806.42 and 50,881.10

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Solution

The fourth proportional to 91,159.50, 125,806.42 and 50,881.10 is: 70,219.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,159.50 : 125,806.42 = 50,881.10 : x
  2. Step 2: Convert to fraction form
    91,159.50/125,806.42 = 50,881.10/x
  3. Step 3: Cross multiply
    91,159.50x = 125,806.42 × 50,881.10
  4. Step 4: Simplify right side
    91,159.50x = 6,401,169,036.66
  5. Step 5: Solve for x
    x = 6,401,169,036.66/91,159.50
  6. Step 6: Final answer
    x = 70,219.44

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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.