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Finding the Fourth Proportional to 28,893,800.15, 39,873,497.49 and 15,662,936.15

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Solution

The fourth proportional to 28,893,800.15, 39,873,497.49 and 15,662,936.15 is: 21,614,880.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,893,800.15 : 39,873,497.49 = 15,662,936.15 : x
  2. Step 2: Convert to fraction form
    28,893,800.15/39,873,497.49 = 15,662,936.15/x
  3. Step 3: Cross multiply
    28,893,800.15x = 39,873,497.49 × 15,662,936.15
  4. Step 4: Simplify right side
    28,893,800.15x = 624,536,045,063,687.75
  5. Step 5: Solve for x
    x = 624,536,045,063,687.75/28,893,800.15
  6. Step 6: Final answer
    x = 21,614,880.77

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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.