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Finding the Fourth Proportional to 18,886,546.80, 28,287,829.80 and 14,612,857.20

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Solution

The fourth proportional to 18,886,546.80, 28,287,829.80 and 14,612,857.20 is: 21,886,797.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886,546.80 : 28,287,829.80 = 14,612,857.20 : x
  2. Step 2: Convert to fraction form
    18,886,546.80/28,287,829.80 = 14,612,857.20/x
  3. Step 3: Cross multiply
    18,886,546.80x = 28,287,829.80 × 14,612,857.20
  4. Step 4: Simplify right side
    18,886,546.80x = 413,366,017,365,304.56
  5. Step 5: Solve for x
    x = 413,366,017,365,304.56/18,886,546.80
  6. Step 6: Final answer
    x = 21,886,797.08

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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.