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Finding the Fourth Proportional to 18,889,616.80, 28,397,410.80 and 16,118,250.40

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Solution

The fourth proportional to 18,889,616.80, 28,397,410.80 and 16,118,250.40 is: 24,231,120.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889,616.80 : 28,397,410.80 = 16,118,250.40 : x
  2. Step 2: Convert to fraction form
    18,889,616.80/28,397,410.80 = 16,118,250.40/x
  3. Step 3: Cross multiply
    18,889,616.80x = 28,397,410.80 × 16,118,250.40
  4. Step 4: Simplify right side
    18,889,616.80x = 457,716,577,986,064.31
  5. Step 5: Solve for x
    x = 457,716,577,986,064.31/18,889,616.80
  6. Step 6: Final answer
    x = 24,231,120.35

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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.