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Finding the Fourth Proportional to 2,858,967.78, 3,946,261.26 and 1,840,372.50

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Solution

The fourth proportional to 2,858,967.78, 3,946,261.26 and 1,840,372.50 is: 2,540,284.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858,967.78 : 3,946,261.26 = 1,840,372.50 : x
  2. Step 2: Convert to fraction form
    2,858,967.78/3,946,261.26 = 1,840,372.50/x
  3. Step 3: Cross multiply
    2,858,967.78x = 3,946,261.26 × 1,840,372.50
  4. Step 4: Simplify right side
    2,858,967.78x = 7,262,590,700,719.35
  5. Step 5: Solve for x
    x = 7,262,590,700,719.35/2,858,967.78
  6. Step 6: Final answer
    x = 2,540,284.21

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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.