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Finding the Fourth Proportional to 43,937.61, 65,905.82 and 10,657.99

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Solution

The fourth proportional to 43,937.61, 65,905.82 and 10,657.99 is: 15,986.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,937.61 : 65,905.82 = 10,657.99 : x
  2. Step 2: Convert to fraction form
    43,937.61/65,905.82 = 10,657.99/x
  3. Step 3: Cross multiply
    43,937.61x = 65,905.82 × 10,657.99
  4. Step 4: Simplify right side
    43,937.61x = 702,423,570.50
  5. Step 5: Solve for x
    x = 702,423,570.50/43,937.61
  6. Step 6: Final answer
    x = 15,986.84

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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.