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Finding the Fourth Proportional to 46,863.80, 70,311.90 and 45,243.80

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Solution

The fourth proportional to 46,863.80, 70,311.90 and 45,243.80 is: 67,881.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,863.80 : 70,311.90 = 45,243.80 : x
  2. Step 2: Convert to fraction form
    46,863.80/70,311.90 = 45,243.80/x
  3. Step 3: Cross multiply
    46,863.80x = 70,311.90 × 45,243.80
  4. Step 4: Simplify right side
    46,863.80x = 3,181,177,541.22
  5. Step 5: Solve for x
    x = 3,181,177,541.22/46,863.80
  6. Step 6: Final answer
    x = 67,881.34

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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.