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Finding the Fourth Proportional to 3,784,920.90, 5,677,381.35 and 3,784,920.90

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Solution

The fourth proportional to 3,784,920.90, 5,677,381.35 and 3,784,920.90 is: 5,677,381.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,784,920.90 : 5,677,381.35 = 3,784,920.90 : x
  2. Step 2: Convert to fraction form
    3,784,920.90/5,677,381.35 = 3,784,920.90/x
  3. Step 3: Cross multiply
    3,784,920.90x = 5,677,381.35 × 3,784,920.90
  4. Step 4: Simplify right side
    3,784,920.90x = 21,488,439,328,885.21
  5. Step 5: Solve for x
    x = 21,488,439,328,885.21/3,784,920.90
  6. Step 6: Final answer
    x = 5,677,381.35

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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.