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Finding the Fourth Proportional to 127,309.60, 190,968.16 and 60,756.80

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Solution

The fourth proportional to 127,309.60, 190,968.16 and 60,756.80 is: 91,136.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,309.60 : 190,968.16 = 60,756.80 : x
  2. Step 2: Convert to fraction form
    127,309.60/190,968.16 = 60,756.80/x
  3. Step 3: Cross multiply
    127,309.60x = 190,968.16 × 60,756.80
  4. Step 4: Simplify right side
    127,309.60x = 11,602,614,303.49
  5. Step 5: Solve for x
    x = 11,602,614,303.49/127,309.60
  6. Step 6: Final answer
    x = 91,136.99

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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.