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Finding the Fourth Proportional to 127,615.80, 191,409.10 and 34,128.84

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Solution

The fourth proportional to 127,615.80, 191,409.10 and 34,128.84 is: 51,189.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,615.80 : 191,409.10 = 34,128.84 : x
  2. Step 2: Convert to fraction form
    127,615.80/191,409.10 = 34,128.84/x
  3. Step 3: Cross multiply
    127,615.80x = 191,409.10 × 34,128.84
  4. Step 4: Simplify right side
    127,615.80x = 6,532,570,548.44
  5. Step 5: Solve for x
    x = 6,532,570,548.44/127,615.80
  6. Step 6: Final answer
    x = 51,189.36

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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.