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Finding the Fourth Proportional to 656,282.25, 905,670.11 and 354,476.25

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Solution

The fourth proportional to 656,282.25, 905,670.11 and 354,476.25 is: 489,177.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,282.25 : 905,670.11 = 354,476.25 : x
  2. Step 2: Convert to fraction form
    656,282.25/905,670.11 = 354,476.25/x
  3. Step 3: Cross multiply
    656,282.25x = 905,670.11 × 354,476.25
  4. Step 4: Simplify right side
    656,282.25x = 321,038,545,216.08
  5. Step 5: Solve for x
    x = 321,038,545,216.08/656,282.25
  6. Step 6: Final answer
    x = 489,177.55

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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.