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Finding the Fourth Proportional to 157,936, 236,945.04 and 47,128

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Solution

The fourth proportional to 157,936, 236,945.04 and 47,128 is: 70,704.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,936 : 236,945.04 = 47,128 : x
  2. Step 2: Convert to fraction form
    157,936/236,945.04 = 47,128/x
  3. Step 3: Cross multiply
    157,936x = 236,945.04 × 47,128
  4. Step 4: Simplify right side
    157,936x = 11,166,745,845.12
  5. Step 5: Solve for x
    x = 11,166,745,845.12/157,936
  6. Step 6: Final answer
    x = 70,704.25

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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.