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Finding the Fourth Proportional to 7,216,689.93, 9,958,613.61 and 3,952,936.47

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Solution

The fourth proportional to 7,216,689.93, 9,958,613.61 and 3,952,936.47 is: 5,454,823.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,216,689.93 : 9,958,613.61 = 3,952,936.47 : x
  2. Step 2: Convert to fraction form
    7,216,689.93/9,958,613.61 = 3,952,936.47/x
  3. Step 3: Cross multiply
    7,216,689.93x = 9,958,613.61 × 3,952,936.47
  4. Step 4: Simplify right side
    7,216,689.93x = 39,365,766,929,607.36
  5. Step 5: Solve for x
    x = 39,365,766,929,607.36/7,216,689.93
  6. Step 6: Final answer
    x = 5,454,823.10

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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.