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Finding the Fourth Proportional to 77,256.77, 106,605.53 and 43,260.53

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Solution

The fourth proportional to 77,256.77, 106,605.53 and 43,260.53 is: 59,694.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,256.77 : 106,605.53 = 43,260.53 : x
  2. Step 2: Convert to fraction form
    77,256.77/106,605.53 = 43,260.53/x
  3. Step 3: Cross multiply
    77,256.77x = 106,605.53 × 43,260.53
  4. Step 4: Simplify right side
    77,256.77x = 4,611,811,728.73
  5. Step 5: Solve for x
    x = 4,611,811,728.73/77,256.77
  6. Step 6: Final answer
    x = 59,694.60

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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.