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Finding the Fourth Proportional to 7,223,893.66, 9,968,920.45 and 3,960,654.63

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Solution

The fourth proportional to 7,223,893.66, 9,968,920.45 and 3,960,654.63 is: 5,465,674.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,223,893.66 : 9,968,920.45 = 3,960,654.63 : x
  2. Step 2: Convert to fraction form
    7,223,893.66/9,968,920.45 = 3,960,654.63/x
  3. Step 3: Cross multiply
    7,223,893.66x = 9,968,920.45 × 3,960,654.63
  4. Step 4: Simplify right side
    7,223,893.66x = 39,483,450,936,394.18
  5. Step 5: Solve for x
    x = 39,483,450,936,394.18/7,223,893.66
  6. Step 6: Final answer
    x = 5,465,674.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.