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Finding the Fourth Proportional to 77,794.37, 107,366.45 and 43,809.49

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Solution

The fourth proportional to 77,794.37, 107,366.45 and 43,809.49 is: 60,462.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,794.37 : 107,366.45 = 43,809.49 : x
  2. Step 2: Convert to fraction form
    77,794.37/107,366.45 = 43,809.49/x
  3. Step 3: Cross multiply
    77,794.37x = 107,366.45 × 43,809.49
  4. Step 4: Simplify right side
    77,794.37x = 4,703,669,417.61
  5. Step 5: Solve for x
    x = 4,703,669,417.61/77,794.37
  6. Step 6: Final answer
    x = 60,462.85

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1.5x scale

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.