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Finding the Fourth Proportional to 656,323.02, 905,725.80 and 354,517.02

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Solution

The fourth proportional to 656,323.02, 905,725.80 and 354,517.02 is: 489,233.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,323.02 : 905,725.80 = 354,517.02 : x
  2. Step 2: Convert to fraction form
    656,323.02/905,725.80 = 354,517.02/x
  3. Step 3: Cross multiply
    656,323.02x = 905,725.80 × 354,517.02
  4. Step 4: Simplify right side
    656,323.02x = 321,095,211,553.12
  5. Step 5: Solve for x
    x = 321,095,211,553.12/656,323.02
  6. Step 6: Final answer
    x = 489,233.51

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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.