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Finding the Fourth Proportional to 153,957.91, 212,388.19 and 96,568.49

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Solution

The fourth proportional to 153,957.91, 212,388.19 and 96,568.49 is: 133,218.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,957.91 : 212,388.19 = 96,568.49 : x
  2. Step 2: Convert to fraction form
    153,957.91/212,388.19 = 96,568.49/x
  3. Step 3: Cross multiply
    153,957.91x = 212,388.19 × 96,568.49
  4. Step 4: Simplify right side
    153,957.91x = 20,510,006,319.29
  5. Step 5: Solve for x
    x = 20,510,006,319.29/153,957.91
  6. Step 6: Final answer
    x = 133,218.27

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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.