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Finding the Fourth Proportional to 126,559.80, 190,058.40 and 67,510.80

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Solution

The fourth proportional to 126,559.80, 190,058.40 and 67,510.80 is: 101,382.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,559.80 : 190,058.40 = 67,510.80 : x
  2. Step 2: Convert to fraction form
    126,559.80/190,058.40 = 67,510.80/x
  3. Step 3: Cross multiply
    126,559.80x = 190,058.40 × 67,510.80
  4. Step 4: Simplify right side
    126,559.80x = 12,830,994,630.72
  5. Step 5: Solve for x
    x = 12,830,994,630.72/126,559.80
  6. Step 6: Final answer
    x = 101,382.86

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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.