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Finding the Fourth Proportional to 690,392.30, 952,548.89 and 445,273.34

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Solution

The fourth proportional to 690,392.30, 952,548.89 and 445,273.34 is: 614,353.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,392.30 : 952,548.89 = 445,273.34 : x
  2. Step 2: Convert to fraction form
    690,392.30/952,548.89 = 445,273.34/x
  3. Step 3: Cross multiply
    690,392.30x = 952,548.89 × 445,273.34
  4. Step 4: Simplify right side
    690,392.30x = 424,144,625,918.60
  5. Step 5: Solve for x
    x = 424,144,625,918.60/690,392.30
  6. Step 6: Final answer
    x = 614,353.06

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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.