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Finding the Fourth Proportional to 92,705.70, 139,048.92 and 62,911.20

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Solution

The fourth proportional to 92,705.70, 139,048.92 and 62,911.20 is: 94,360.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,705.70 : 139,048.92 = 62,911.20 : x
  2. Step 2: Convert to fraction form
    92,705.70/139,048.92 = 62,911.20/x
  3. Step 3: Cross multiply
    92,705.70x = 139,048.92 × 62,911.20
  4. Step 4: Simplify right side
    92,705.70x = 8,747,734,415.90
  5. Step 5: Solve for x
    x = 8,747,734,415.90/92,705.70
  6. Step 6: Final answer
    x = 94,360.26

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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.