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Finding the Fourth Proportional to 866,606.67, 1,299,122.69 and 393,033.69

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Solution

The fourth proportional to 866,606.67, 1,299,122.69 and 393,033.69 is: 589,193.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,606.67 : 1,299,122.69 = 393,033.69 : x
  2. Step 2: Convert to fraction form
    866,606.67/1,299,122.69 = 393,033.69/x
  3. Step 3: Cross multiply
    866,606.67x = 1,299,122.69 × 393,033.69
  4. Step 4: Simplify right side
    866,606.67x = 510,598,982,648.26
  5. Step 5: Solve for x
    x = 510,598,982,648.26/866,606.67
  6. Step 6: Final answer
    x = 589,193.46

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1.5x scale

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.