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Finding the Fourth Proportional to 611,741.54, 917,777.15 and 256,660.22

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Solution

The fourth proportional to 611,741.54, 917,777.15 and 256,660.22 is: 385,059.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,741.54 : 917,777.15 = 256,660.22 : x
  2. Step 2: Convert to fraction form
    611,741.54/917,777.15 = 256,660.22/x
  3. Step 3: Cross multiply
    611,741.54x = 917,777.15 × 256,660.22
  4. Step 4: Simplify right side
    611,741.54x = 235,556,885,229.97
  5. Step 5: Solve for x
    x = 235,556,885,229.97/611,741.54
  6. Step 6: Final answer
    x = 385,059.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.