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Finding the Fourth Proportional to 62,705.80, 94,212.30 and 47,153.80

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Solution

The fourth proportional to 62,705.80, 94,212.30 and 47,153.80 is: 70,846.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,705.80 : 94,212.30 = 47,153.80 : x
  2. Step 2: Convert to fraction form
    62,705.80/94,212.30 = 47,153.80/x
  3. Step 3: Cross multiply
    62,705.80x = 94,212.30 × 47,153.80
  4. Step 4: Simplify right side
    62,705.80x = 4,442,467,951.74
  5. Step 5: Solve for x
    x = 4,442,467,951.74/62,705.80
  6. Step 6: Final answer
    x = 70,846.20

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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.