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Finding the Fourth Proportional to 65,048.61, 89,762.13 and 39,551.43

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Solution

The fourth proportional to 65,048.61, 89,762.13 and 39,551.43 is: 54,577.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,048.61 : 89,762.13 = 39,551.43 : x
  2. Step 2: Convert to fraction form
    65,048.61/89,762.13 = 39,551.43/x
  3. Step 3: Cross multiply
    65,048.61x = 89,762.13 × 39,551.43
  4. Step 4: Simplify right side
    65,048.61x = 3,550,220,627.99
  5. Step 5: Solve for x
    x = 3,550,220,627.99/65,048.61
  6. Step 6: Final answer
    x = 54,577.96

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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.