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Finding the Fourth Proportional to 691,640.75, 955,251.56 and 464,892.59

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Solution

The fourth proportional to 691,640.75, 955,251.56 and 464,892.59 is: 642,080.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,640.75 : 955,251.56 = 464,892.59 : x
  2. Step 2: Convert to fraction form
    691,640.75/955,251.56 = 464,892.59/x
  3. Step 3: Cross multiply
    691,640.75x = 955,251.56 × 464,892.59
  4. Step 4: Simplify right side
    691,640.75x = 444,089,371,829.94
  5. Step 5: Solve for x
    x = 444,089,371,829.94/691,640.75
  6. Step 6: Final answer
    x = 642,080.98

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Double scale
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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.