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Finding the Fourth Proportional to 30,912.40, 46,271.40 and 22,164.40

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Solution

The fourth proportional to 30,912.40, 46,271.40 and 22,164.40 is: 33,176.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,912.40 : 46,271.40 = 22,164.40 : x
  2. Step 2: Convert to fraction form
    30,912.40/46,271.40 = 22,164.40/x
  3. Step 3: Cross multiply
    30,912.40x = 46,271.40 × 22,164.40
  4. Step 4: Simplify right side
    30,912.40x = 1,025,577,818.16
  5. Step 5: Solve for x
    x = 1,025,577,818.16/30,912.40
  6. Step 6: Final answer
    x = 33,176.91

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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.