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Finding the Fourth Proportional to 80,473.60, 111,097.56 and 55,018.24

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Solution

The fourth proportional to 80,473.60, 111,097.56 and 55,018.24 is: 75,955.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,473.60 : 111,097.56 = 55,018.24 : x
  2. Step 2: Convert to fraction form
    80,473.60/111,097.56 = 55,018.24/x
  3. Step 3: Cross multiply
    80,473.60x = 111,097.56 × 55,018.24
  4. Step 4: Simplify right side
    80,473.60x = 6,112,392,219.49
  5. Step 5: Solve for x
    x = 6,112,392,219.49/80,473.60
  6. Step 6: Final answer
    x = 75,955.25

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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.