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Finding the Fourth Proportional to 127,683.50, 191,525.25 and 40,131.50

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Solution

The fourth proportional to 127,683.50, 191,525.25 and 40,131.50 is: 60,197.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,683.50 : 191,525.25 = 40,131.50 : x
  2. Step 2: Convert to fraction form
    127,683.50/191,525.25 = 40,131.50/x
  3. Step 3: Cross multiply
    127,683.50x = 191,525.25 × 40,131.50
  4. Step 4: Simplify right side
    127,683.50x = 7,686,195,570.38
  5. Step 5: Solve for x
    x = 7,686,195,570.38/127,683.50
  6. Step 6: Final answer
    x = 60,197.25

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1.5x scale

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.