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Finding the Fourth Proportional to 18,358,939.30, 27,538,408.95 and 8,793,001.30

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Solution

The fourth proportional to 18,358,939.30, 27,538,408.95 and 8,793,001.30 is: 13,189,501.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,358,939.30 : 27,538,408.95 = 8,793,001.30 : x
  2. Step 2: Convert to fraction form
    18,358,939.30/27,538,408.95 = 8,793,001.30/x
  3. Step 3: Cross multiply
    18,358,939.30x = 27,538,408.95 × 8,793,001.30
  4. Step 4: Simplify right side
    18,358,939.30x = 242,145,265,697,281.66
  5. Step 5: Solve for x
    x = 242,145,265,697,281.66/18,358,939.30
  6. Step 6: Final answer
    x = 13,189,501.95

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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.