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Finding the Fourth Proportional to 80,673.80, 121,010.70 and 62,011.40

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Solution

The fourth proportional to 80,673.80, 121,010.70 and 62,011.40 is: 93,017.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,673.80 : 121,010.70 = 62,011.40 : x
  2. Step 2: Convert to fraction form
    80,673.80/121,010.70 = 62,011.40/x
  3. Step 3: Cross multiply
    80,673.80x = 121,010.70 × 62,011.40
  4. Step 4: Simplify right side
    80,673.80x = 7,504,042,921.98
  5. Step 5: Solve for x
    x = 7,504,042,921.98/80,673.80
  6. Step 6: Final answer
    x = 93,017.10

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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.