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Finding the Fourth Proportional to 114,128.88, 171,102.96 and 57,917.28

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Solution

The fourth proportional to 114,128.88, 171,102.96 and 57,917.28 is: 86,830.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,128.88 : 171,102.96 = 57,917.28 : x
  2. Step 2: Convert to fraction form
    114,128.88/171,102.96 = 57,917.28/x
  3. Step 3: Cross multiply
    114,128.88x = 171,102.96 × 57,917.28
  4. Step 4: Simplify right side
    114,128.88x = 9,909,818,043.15
  5. Step 5: Solve for x
    x = 9,909,818,043.15/114,128.88
  6. Step 6: Final answer
    x = 86,830.06

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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.