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Finding the Fourth Proportional to 1,557,308, 2,149,087.92 and 841,916

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Solution

The fourth proportional to 1,557,308, 2,149,087.92 and 841,916 is: 1,161,845.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557,308 : 2,149,087.92 = 841,916 : x
  2. Step 2: Convert to fraction form
    1,557,308/2,149,087.92 = 841,916/x
  3. Step 3: Cross multiply
    1,557,308x = 2,149,087.92 × 841,916
  4. Step 4: Simplify right side
    1,557,308x = 1,809,351,505,254.72
  5. Step 5: Solve for x
    x = 1,809,351,505,254.72/1,557,308
  6. Step 6: Final answer
    x = 1,161,845.64

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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.