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Finding the Fourth Proportional to 393,293.67, 542,436.93 and 269,188.21

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Solution

The fourth proportional to 393,293.67, 542,436.93 and 269,188.21 is: 371,268.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,293.67 : 542,436.93 = 269,188.21 : x
  2. Step 2: Convert to fraction form
    393,293.67/542,436.93 = 269,188.21/x
  3. Step 3: Cross multiply
    393,293.67x = 542,436.93 × 269,188.21
  4. Step 4: Simplify right side
    393,293.67x = 146,017,626,224.60
  5. Step 5: Solve for x
    x = 146,017,626,224.60/393,293.67
  6. Step 6: Final answer
    x = 371,268.69

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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.