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Finding the Fourth Proportional to 127,571.30, 191,083.56 and 103,765.84

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Solution

The fourth proportional to 127,571.30, 191,083.56 and 103,765.84 is: 155,426.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,571.30 : 191,083.56 = 103,765.84 : x
  2. Step 2: Convert to fraction form
    127,571.30/191,083.56 = 103,765.84/x
  3. Step 3: Cross multiply
    127,571.30x = 191,083.56 × 103,765.84
  4. Step 4: Simplify right side
    127,571.30x = 19,827,946,113.59
  5. Step 5: Solve for x
    x = 19,827,946,113.59/127,571.30
  6. Step 6: Final answer
    x = 155,426.39

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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.