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Finding the Fourth Proportional to 127,969.80, 191,868.30 and 68,008.20

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Solution

The fourth proportional to 127,969.80, 191,868.30 and 68,008.20 is: 101,966.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,969.80 : 191,868.30 = 68,008.20 : x
  2. Step 2: Convert to fraction form
    127,969.80/191,868.30 = 68,008.20/x
  3. Step 3: Cross multiply
    127,969.80x = 191,868.30 × 68,008.20
  4. Step 4: Simplify right side
    127,969.80x = 13,048,617,720.06
  5. Step 5: Solve for x
    x = 13,048,617,720.06/127,969.80
  6. Step 6: Final answer
    x = 101,966.38

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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.