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Finding the Fourth Proportional to 18,637,866.78, 27,947,446.68 and 10,859,294.88

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Solution

The fourth proportional to 18,637,866.78, 27,947,446.68 and 10,859,294.88 is: 16,283,492.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637,866.78 : 27,947,446.68 = 10,859,294.88 : x
  2. Step 2: Convert to fraction form
    18,637,866.78/27,947,446.68 = 10,859,294.88/x
  3. Step 3: Cross multiply
    18,637,866.78x = 27,947,446.68 × 10,859,294.88
  4. Step 4: Simplify right side
    18,637,866.78x = 303,489,564,641,197
  5. Step 5: Solve for x
    x = 303,489,564,641,197/18,637,866.78
  6. Step 6: Final answer
    x = 16,283,492.54

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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.