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Finding the Fourth Proportional to 157,406.40, 236,167.20 and 63,921.60

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Solution

The fourth proportional to 157,406.40, 236,167.20 and 63,921.60 is: 95,905.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,406.40 : 236,167.20 = 63,921.60 : x
  2. Step 2: Convert to fraction form
    157,406.40/236,167.20 = 63,921.60/x
  3. Step 3: Cross multiply
    157,406.40x = 236,167.20 × 63,921.60
  4. Step 4: Simplify right side
    157,406.40x = 15,096,185,291.52
  5. Step 5: Solve for x
    x = 15,096,185,291.52/157,406.40
  6. Step 6: Final answer
    x = 95,905.79

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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.