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Finding the Fourth Proportional to 656,270.25, 905,653.56 and 354,464.25

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Solution

The fourth proportional to 656,270.25, 905,653.56 and 354,464.25 is: 489,161.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,270.25 : 905,653.56 = 354,464.25 : x
  2. Step 2: Convert to fraction form
    656,270.25/905,653.56 = 354,464.25/x
  3. Step 3: Cross multiply
    656,270.25x = 905,653.56 × 354,464.25
  4. Step 4: Simplify right side
    656,270.25x = 321,021,809,905.23
  5. Step 5: Solve for x
    x = 321,021,809,905.23/656,270.25
  6. Step 6: Final answer
    x = 489,161.00

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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.