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Finding the Fourth Proportional to 126,692.40, 190,038.60 and 67,497.60

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Solution

The fourth proportional to 126,692.40, 190,038.60 and 67,497.60 is: 101,246.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,692.40 : 190,038.60 = 67,497.60 : x
  2. Step 2: Convert to fraction form
    126,692.40/190,038.60 = 67,497.60/x
  3. Step 3: Cross multiply
    126,692.40x = 190,038.60 × 67,497.60
  4. Step 4: Simplify right side
    126,692.40x = 12,827,149,407.36
  5. Step 5: Solve for x
    x = 12,827,149,407.36/126,692.40
  6. Step 6: Final answer
    x = 101,246.40

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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.