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Finding the Fourth Proportional to 62,821.80, 94,386.30 and 47,269.80

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Solution

The fourth proportional to 62,821.80, 94,386.30 and 47,269.80 is: 71,020.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,821.80 : 94,386.30 = 47,269.80 : x
  2. Step 2: Convert to fraction form
    62,821.80/94,386.30 = 47,269.80/x
  3. Step 3: Cross multiply
    62,821.80x = 94,386.30 × 47,269.80
  4. Step 4: Simplify right side
    62,821.80x = 4,461,621,523.74
  5. Step 5: Solve for x
    x = 4,461,621,523.74/62,821.80
  6. Step 6: Final answer
    x = 71,020.28

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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.