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Finding the Fourth Proportional to 1,959,680.22, 2,938,764.44 and 761,444.78

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Solution

The fourth proportional to 1,959,680.22, 2,938,764.44 and 761,444.78 is: 1,141,873.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959,680.22 : 2,938,764.44 = 761,444.78 : x
  2. Step 2: Convert to fraction form
    1,959,680.22/2,938,764.44 = 761,444.78/x
  3. Step 3: Cross multiply
    1,959,680.22x = 2,938,764.44 × 761,444.78
  4. Step 4: Simplify right side
    1,959,680.22x = 2,237,706,842,487.62
  5. Step 5: Solve for x
    x = 2,237,706,842,487.62/1,959,680.22
  6. Step 6: Final answer
    x = 1,141,873.46

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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.