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Finding the Fourth Proportional to 656,775.33, 906,349.41 and 354,969.33

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Solution

The fourth proportional to 656,775.33, 906,349.41 and 354,969.33 is: 489,857.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,775.33 : 906,349.41 = 354,969.33 : x
  2. Step 2: Convert to fraction form
    656,775.33/906,349.41 = 354,969.33/x
  3. Step 3: Cross multiply
    656,775.33x = 906,349.41 × 354,969.33
  4. Step 4: Simplify right side
    656,775.33x = 321,726,239,414.79
  5. Step 5: Solve for x
    x = 321,726,239,414.79/656,775.33
  6. Step 6: Final answer
    x = 489,857.38

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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.