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Finding the Fourth Proportional to 74,711.60, 112,067.40 and 53,716.40

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Solution

The fourth proportional to 74,711.60, 112,067.40 and 53,716.40 is: 80,574.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,711.60 : 112,067.40 = 53,716.40 : x
  2. Step 2: Convert to fraction form
    74,711.60/112,067.40 = 53,716.40/x
  3. Step 3: Cross multiply
    74,711.60x = 112,067.40 × 53,716.40
  4. Step 4: Simplify right side
    74,711.60x = 6,019,857,285.36
  5. Step 5: Solve for x
    x = 6,019,857,285.36/74,711.60
  6. Step 6: Final answer
    x = 80,574.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.