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Finding the Fourth Proportional to 127,835.60, 191,751.60 and 57,714.80

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Solution

The fourth proportional to 127,835.60, 191,751.60 and 57,714.80 is: 86,571.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,835.60 : 191,751.60 = 57,714.80 : x
  2. Step 2: Convert to fraction form
    127,835.60/191,751.60 = 57,714.80/x
  3. Step 3: Cross multiply
    127,835.60x = 191,751.60 × 57,714.80
  4. Step 4: Simplify right side
    127,835.60x = 11,066,905,243.68
  5. Step 5: Solve for x
    x = 11,066,905,243.68/127,835.60
  6. Step 6: Final answer
    x = 86,571.39

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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.