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Finding the Fourth Proportional to 127,323.60, 190,991.88 and 47,343.84

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Solution

The fourth proportional to 127,323.60, 190,991.88 and 47,343.84 is: 71,018.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,323.60 : 190,991.88 = 47,343.84 : x
  2. Step 2: Convert to fraction form
    127,323.60/190,991.88 = 47,343.84/x
  3. Step 3: Cross multiply
    127,323.60x = 190,991.88 × 47,343.84
  4. Step 4: Simplify right side
    127,323.60x = 9,042,289,008.02
  5. Step 5: Solve for x
    x = 9,042,289,008.02/127,323.60
  6. Step 6: Final answer
    x = 71,018.17

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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.