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Finding the Fourth Proportional to 127,615.20, 191,077.20 and 99,967.20

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Solution

The fourth proportional to 127,615.20, 191,077.20 and 99,967.20 is: 149,680.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,615.20 : 191,077.20 = 99,967.20 : x
  2. Step 2: Convert to fraction form
    127,615.20/191,077.20 = 99,967.20/x
  3. Step 3: Cross multiply
    127,615.20x = 191,077.20 × 99,967.20
  4. Step 4: Simplify right side
    127,615.20x = 19,101,452,667.84
  5. Step 5: Solve for x
    x = 19,101,452,667.84/127,615.20
  6. Step 6: Final answer
    x = 149,680.07

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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.