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Finding the Fourth Proportional to 1,297,833.81, 1,788,481.41 and 934,571.90

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Solution

The fourth proportional to 1,297,833.81, 1,788,481.41 and 934,571.90 is: 1,287,887.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,833.81 : 1,788,481.41 = 934,571.90 : x
  2. Step 2: Convert to fraction form
    1,297,833.81/1,788,481.41 = 934,571.90/x
  3. Step 3: Cross multiply
    1,297,833.81x = 1,788,481.41 × 934,571.90
  4. Step 4: Simplify right side
    1,297,833.81x = 1,671,464,460,515.97
  5. Step 5: Solve for x
    x = 1,671,464,460,515.97/1,297,833.81
  6. Step 6: Final answer
    x = 1,287,887.90

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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.