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Finding the Fourth Proportional to 444,414.40, 666,556.80 and 128,838.40

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Solution

The fourth proportional to 444,414.40, 666,556.80 and 128,838.40 is: 193,238.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,414.40 : 666,556.80 = 128,838.40 : x
  2. Step 2: Convert to fraction form
    444,414.40/666,556.80 = 128,838.40/x
  3. Step 3: Cross multiply
    444,414.40x = 666,556.80 × 128,838.40
  4. Step 4: Simplify right side
    444,414.40x = 85,878,111,621.12
  5. Step 5: Solve for x
    x = 85,878,111,621.12/444,414.40
  6. Step 6: Final answer
    x = 193,238.81

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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.