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Finding the Fourth Proportional to 392,812.77, 542,039.53 and 263,725.10

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Solution

The fourth proportional to 392,812.77, 542,039.53 and 263,725.10 is: 363,912.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,812.77 : 542,039.53 = 263,725.10 : x
  2. Step 2: Convert to fraction form
    392,812.77/542,039.53 = 263,725.10/x
  3. Step 3: Cross multiply
    392,812.77x = 542,039.53 × 263,725.10
  4. Step 4: Simplify right side
    392,812.77x = 142,949,429,253.20
  5. Step 5: Solve for x
    x = 142,949,429,253.20/392,812.77
  6. Step 6: Final answer
    x = 363,912.38

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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.