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Finding the Fourth Proportional to 8,700,979.35, 13,051,469.03 and 8,700,979.35

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Solution

The fourth proportional to 8,700,979.35, 13,051,469.03 and 8,700,979.35 is: 13,051,469.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700,979.35 : 13,051,469.03 = 8,700,979.35 : x
  2. Step 2: Convert to fraction form
    8,700,979.35/13,051,469.03 = 8,700,979.35/x
  3. Step 3: Cross multiply
    8,700,979.35x = 13,051,469.03 × 8,700,979.35
  4. Step 4: Simplify right side
    8,700,979.35x = 113,560,562,473,689.62
  5. Step 5: Solve for x
    x = 113,560,562,473,689.62/8,700,979.35
  6. Step 6: Final answer
    x = 13,051,469.03

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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.