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Finding the Fourth Proportional to 444,112.50, 666,174.42 and 128,569.71

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Solution

The fourth proportional to 444,112.50, 666,174.42 and 128,569.71 is: 192,856.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,112.50 : 666,174.42 = 128,569.71 : x
  2. Step 2: Convert to fraction form
    444,112.50/666,174.42 = 128,569.71/x
  3. Step 3: Cross multiply
    444,112.50x = 666,174.42 × 128,569.71
  4. Step 4: Simplify right side
    444,112.50x = 85,649,851,988.82
  5. Step 5: Solve for x
    x = 85,649,851,988.82/444,112.50
  6. Step 6: Final answer
    x = 192,856.21

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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.