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Finding the Fourth Proportional to 127,638.72, 192,413.70 and 119,075.40

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Solution

The fourth proportional to 127,638.72, 192,413.70 and 119,075.40 is: 179,504.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,638.72 : 192,413.70 = 119,075.40 : x
  2. Step 2: Convert to fraction form
    127,638.72/192,413.70 = 119,075.40/x
  3. Step 3: Cross multiply
    127,638.72x = 192,413.70 × 119,075.40
  4. Step 4: Simplify right side
    127,638.72x = 22,911,738,292.98
  5. Step 5: Solve for x
    x = 22,911,738,292.98/127,638.72
  6. Step 6: Final answer
    x = 179,504.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.