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Finding the Fourth Proportional to 1,347,894.69, 1,856,933.49 and 939,254.97

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Solution

The fourth proportional to 1,347,894.69, 1,856,933.49 and 939,254.97 is: 1,293,969.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347,894.69 : 1,856,933.49 = 939,254.97 : x
  2. Step 2: Convert to fraction form
    1,347,894.69/1,856,933.49 = 939,254.97/x
  3. Step 3: Cross multiply
    1,347,894.69x = 1,856,933.49 × 939,254.97
  4. Step 4: Simplify right side
    1,347,894.69x = 1,744,134,009,441.95
  5. Step 5: Solve for x
    x = 1,744,134,009,441.95/1,347,894.69
  6. Step 6: Final answer
    x = 1,293,969.05

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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.