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Finding the Fourth Proportional to 695,283.78, 959,505.21 and 453,720.90

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Solution

The fourth proportional to 695,283.78, 959,505.21 and 453,720.90 is: 626,143.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,283.78 : 959,505.21 = 453,720.90 : x
  2. Step 2: Convert to fraction form
    695,283.78/959,505.21 = 453,720.90/x
  3. Step 3: Cross multiply
    695,283.78x = 959,505.21 × 453,720.90
  4. Step 4: Simplify right side
    695,283.78x = 435,347,567,435.89
  5. Step 5: Solve for x
    x = 435,347,567,435.89/695,283.78
  6. Step 6: Final answer
    x = 626,143.71

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1.5x scale

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.