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Finding the Fourth Proportional to 18,413.84, 25,410.19 and 10,455.02

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Solution

The fourth proportional to 18,413.84, 25,410.19 and 10,455.02 is: 14,427.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,413.84 : 25,410.19 = 10,455.02 : x
  2. Step 2: Convert to fraction form
    18,413.84/25,410.19 = 10,455.02/x
  3. Step 3: Cross multiply
    18,413.84x = 25,410.19 × 10,455.02
  4. Step 4: Simplify right side
    18,413.84x = 265,663,891.47
  5. Step 5: Solve for x
    x = 265,663,891.47/18,413.84
  6. Step 6: Final answer
    x = 14,427.41

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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.