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Finding the Fourth Proportional to 27,889,715.20, 41,834,572.80 and 19,758,667.90

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Solution

The fourth proportional to 27,889,715.20, 41,834,572.80 and 19,758,667.90 is: 29,638,001.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,889,715.20 : 41,834,572.80 = 19,758,667.90 : x
  2. Step 2: Convert to fraction form
    27,889,715.20/41,834,572.80 = 19,758,667.90/x
  3. Step 3: Cross multiply
    27,889,715.20x = 41,834,572.80 × 19,758,667.90
  4. Step 4: Simplify right side
    27,889,715.20x = 826,595,430,693,573
  5. Step 5: Solve for x
    x = 826,595,430,693,573/27,889,715.20
  6. Step 6: Final answer
    x = 29,638,001.85

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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.