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Finding the Fourth Proportional to 315,096.56, 472,644.84 and 128,064.24

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Solution

The fourth proportional to 315,096.56, 472,644.84 and 128,064.24 is: 192,096.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,096.56 : 472,644.84 = 128,064.24 : x
  2. Step 2: Convert to fraction form
    315,096.56/472,644.84 = 128,064.24/x
  3. Step 3: Cross multiply
    315,096.56x = 472,644.84 × 128,064.24
  4. Step 4: Simplify right side
    315,096.56x = 60,528,902,224.52
  5. Step 5: Solve for x
    x = 60,528,902,224.52/315,096.56
  6. Step 6: Final answer
    x = 192,096.36

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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.