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Finding the Fourth Proportional to 40,482.60, 60,723.60 and 31,139.24

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Solution

The fourth proportional to 40,482.60, 60,723.60 and 31,139.24 is: 46,708.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,482.60 : 60,723.60 = 31,139.24 : x
  2. Step 2: Convert to fraction form
    40,482.60/60,723.60 = 31,139.24/x
  3. Step 3: Cross multiply
    40,482.60x = 60,723.60 × 31,139.24
  4. Step 4: Simplify right side
    40,482.60x = 1,890,886,754.06
  5. Step 5: Solve for x
    x = 1,890,886,754.06/40,482.60
  6. Step 6: Final answer
    x = 46,708.63

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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.