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Finding the Fourth Proportional to 77,983.80, 107,612.64 and 44,447.64

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Solution

The fourth proportional to 77,983.80, 107,612.64 and 44,447.64 is: 61,334.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,983.80 : 107,612.64 = 44,447.64 : x
  2. Step 2: Convert to fraction form
    77,983.80/107,612.64 = 44,447.64/x
  3. Step 3: Cross multiply
    77,983.80x = 107,612.64 × 44,447.64
  4. Step 4: Simplify right side
    77,983.80x = 4,783,127,882.17
  5. Step 5: Solve for x
    x = 4,783,127,882.17/77,983.80
  6. Step 6: Final answer
    x = 61,334.89

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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.