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Finding the Fourth Proportional to 3,957,396.48, 5,936,530.56 and 1,261,094.40

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Solution

The fourth proportional to 3,957,396.48, 5,936,530.56 and 1,261,094.40 is: 1,891,780.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957,396.48 : 5,936,530.56 = 1,261,094.40 : x
  2. Step 2: Convert to fraction form
    3,957,396.48/5,936,530.56 = 1,261,094.40/x
  3. Step 3: Cross multiply
    3,957,396.48x = 5,936,530.56 × 1,261,094.40
  4. Step 4: Simplify right side
    3,957,396.48x = 7,486,525,444,644.86
  5. Step 5: Solve for x
    x = 7,486,525,444,644.86/3,957,396.48
  6. Step 6: Final answer
    x = 1,891,780.49

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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.