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Finding the Fourth Proportional to 48,716.40, 73,031.40 and 19,124.40

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Solution

The fourth proportional to 48,716.40, 73,031.40 and 19,124.40 is: 28,669.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,716.40 : 73,031.40 = 19,124.40 : x
  2. Step 2: Convert to fraction form
    48,716.40/73,031.40 = 19,124.40/x
  3. Step 3: Cross multiply
    48,716.40x = 73,031.40 × 19,124.40
  4. Step 4: Simplify right side
    48,716.40x = 1,396,681,706.16
  5. Step 5: Solve for x
    x = 1,396,681,706.16/48,716.40
  6. Step 6: Final answer
    x = 28,669.64

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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.