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Finding the Fourth Proportional to 17,966,897.80, 26,950,346.70 and 7,185,862.60

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Solution

The fourth proportional to 17,966,897.80, 26,950,346.70 and 7,185,862.60 is: 10,778,793.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,966,897.80 : 26,950,346.70 = 7,185,862.60 : x
  2. Step 2: Convert to fraction form
    17,966,897.80/26,950,346.70 = 7,185,862.60/x
  3. Step 3: Cross multiply
    17,966,897.80x = 26,950,346.70 × 7,185,862.60
  4. Step 4: Simplify right side
    17,966,897.80x = 193,661,488,408,563.41
  5. Step 5: Solve for x
    x = 193,661,488,408,563.41/17,966,897.80
  6. Step 6: Final answer
    x = 10,778,793.90

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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.