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Finding the Fourth Proportional to 263,413.50, 363,510.54 and 142,554.72

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Solution

The fourth proportional to 263,413.50, 363,510.54 and 142,554.72 is: 196,725.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,413.50 : 363,510.54 = 142,554.72 : x
  2. Step 2: Convert to fraction form
    263,413.50/363,510.54 = 142,554.72/x
  3. Step 3: Cross multiply
    263,413.50x = 363,510.54 × 142,554.72
  4. Step 4: Simplify right side
    263,413.50x = 51,820,143,246.75
  5. Step 5: Solve for x
    x = 51,820,143,246.75/263,413.50
  6. Step 6: Final answer
    x = 196,725.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.