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Finding the Fourth Proportional to 660,833.54, 911,986.34 and 374,409.44

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Solution

The fourth proportional to 660,833.54, 911,986.34 and 374,409.44 is: 516,705.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,833.54 : 911,986.34 = 374,409.44 : x
  2. Step 2: Convert to fraction form
    660,833.54/911,986.34 = 374,409.44/x
  3. Step 3: Cross multiply
    660,833.54x = 911,986.34 × 374,409.44
  4. Step 4: Simplify right side
    660,833.54x = 341,456,295,254.97
  5. Step 5: Solve for x
    x = 341,456,295,254.97/660,833.54
  6. Step 6: Final answer
    x = 516,705.45

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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.