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Finding the Fourth Proportional to 14,772,169.10, 20,385,515.43 and 8,578,738.70

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Solution

The fourth proportional to 14,772,169.10, 20,385,515.43 and 8,578,738.70 is: 11,838,614.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,772,169.10 : 20,385,515.43 = 8,578,738.70 : x
  2. Step 2: Convert to fraction form
    14,772,169.10/20,385,515.43 = 8,578,738.70/x
  3. Step 3: Cross multiply
    14,772,169.10x = 20,385,515.43 × 8,578,738.70
  4. Step 4: Simplify right side
    14,772,169.10x = 174,882,010,138,788.12
  5. Step 5: Solve for x
    x = 174,882,010,138,788.12/14,772,169.10
  6. Step 6: Final answer
    x = 11,838,614.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.