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Finding the Fourth Proportional to 18,846,064.80, 28,269,097.20 and 16,932,877.20

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Solution

The fourth proportional to 18,846,064.80, 28,269,097.20 and 16,932,877.20 is: 25,399,315.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,846,064.80 : 28,269,097.20 = 16,932,877.20 : x
  2. Step 2: Convert to fraction form
    18,846,064.80/28,269,097.20 = 16,932,877.20/x
  3. Step 3: Cross multiply
    18,846,064.80x = 28,269,097.20 × 16,932,877.20
  4. Step 4: Simplify right side
    18,846,064.80x = 478,677,151,442,463.81
  5. Step 5: Solve for x
    x = 478,677,151,442,463.81/18,846,064.80
  6. Step 6: Final answer
    x = 25,399,315.80

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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.