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Finding the Fourth Proportional to 77,449.66, 106,884.84 and 43,468.90

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Solution

The fourth proportional to 77,449.66, 106,884.84 and 43,468.90 is: 59,989.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,449.66 : 106,884.84 = 43,468.90 : x
  2. Step 2: Convert to fraction form
    77,449.66/106,884.84 = 43,468.90/x
  3. Step 3: Cross multiply
    77,449.66x = 106,884.84 × 43,468.90
  4. Step 4: Simplify right side
    77,449.66x = 4,646,166,421.48
  5. Step 5: Solve for x
    x = 4,646,166,421.48/77,449.66
  6. Step 6: Final answer
    x = 59,989.50

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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.