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Finding the Fourth Proportional to 40,573.40, 60,860.10 and 30,731.90

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Solution

The fourth proportional to 40,573.40, 60,860.10 and 30,731.90 is: 46,097.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,573.40 : 60,860.10 = 30,731.90 : x
  2. Step 2: Convert to fraction form
    40,573.40/60,860.10 = 30,731.90/x
  3. Step 3: Cross multiply
    40,573.40x = 60,860.10 × 30,731.90
  4. Step 4: Simplify right side
    40,573.40x = 1,870,346,507.19
  5. Step 5: Solve for x
    x = 1,870,346,507.19/40,573.40
  6. Step 6: Final answer
    x = 46,097.85

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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.