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Finding the Fourth Proportional to 2,563,938.78, 3,845,986.89 and 881,018.46

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Solution

The fourth proportional to 2,563,938.78, 3,845,986.89 and 881,018.46 is: 1,321,554.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,563,938.78 : 3,845,986.89 = 881,018.46 : x
  2. Step 2: Convert to fraction form
    2,563,938.78/3,845,986.89 = 881,018.46/x
  3. Step 3: Cross multiply
    2,563,938.78x = 3,845,986.89 × 881,018.46
  4. Step 4: Simplify right side
    2,563,938.78x = 3,388,385,447,007.99
  5. Step 5: Solve for x
    x = 3,388,385,447,007.99/2,563,938.78
  6. Step 6: Final answer
    x = 1,321,554.74

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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.