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Finding the Fourth Proportional to 187,696.90, 281,586.90 and 103,413.68

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Solution

The fourth proportional to 187,696.90, 281,586.90 and 103,413.68 is: 155,143.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,696.90 : 281,586.90 = 103,413.68 : x
  2. Step 2: Convert to fraction form
    187,696.90/281,586.90 = 103,413.68/x
  3. Step 3: Cross multiply
    187,696.90x = 281,586.90 × 103,413.68
  4. Step 4: Simplify right side
    187,696.90x = 29,119,937,568.79
  5. Step 5: Solve for x
    x = 29,119,937,568.79/187,696.90
  6. Step 6: Final answer
    x = 155,143.41

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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.