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Finding the Fourth Proportional to 77,468.80, 106,900.80 and 43,928.32

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Solution

The fourth proportional to 77,468.80, 106,900.80 and 43,928.32 is: 60,617.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,468.80 : 106,900.80 = 43,928.32 : x
  2. Step 2: Convert to fraction form
    77,468.80/106,900.80 = 43,928.32/x
  3. Step 3: Cross multiply
    77,468.80x = 106,900.80 × 43,928.32
  4. Step 4: Simplify right side
    77,468.80x = 4,695,972,550.66
  5. Step 5: Solve for x
    x = 4,695,972,550.66/77,468.80
  6. Step 6: Final answer
    x = 60,617.60

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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.