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Finding the Fourth Proportional to 966,900.56, 1,333,893.48 and 644,295.92

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Solution

The fourth proportional to 966,900.56, 1,333,893.48 and 644,295.92 is: 888,842.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    966,900.56 : 1,333,893.48 = 644,295.92 : x
  2. Step 2: Convert to fraction form
    966,900.56/1,333,893.48 = 644,295.92/x
  3. Step 3: Cross multiply
    966,900.56x = 1,333,893.48 × 644,295.92
  4. Step 4: Simplify right side
    966,900.56x = 859,422,126,878.60
  5. Step 5: Solve for x
    x = 859,422,126,878.60/966,900.56
  6. Step 6: Final answer
    x = 888,842.31

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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.