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Finding the Fourth Proportional to 1,280,365.82, 1,764,852.62 and 866,772.16

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Solution

The fourth proportional to 1,280,365.82, 1,764,852.62 and 866,772.16 is: 1,194,756.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,365.82 : 1,764,852.62 = 866,772.16 : x
  2. Step 2: Convert to fraction form
    1,280,365.82/1,764,852.62 = 866,772.16/x
  3. Step 3: Cross multiply
    1,280,365.82x = 1,764,852.62 × 866,772.16
  4. Step 4: Simplify right side
    1,280,365.82x = 1,529,725,117,519.06
  5. Step 5: Solve for x
    x = 1,529,725,117,519.06/1,280,365.82
  6. Step 6: Final answer
    x = 1,194,756.29

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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.