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Finding the Fourth Proportional to 18,948.96, 28,413.72 and 11,053.98

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Solution

The fourth proportional to 18,948.96, 28,413.72 and 11,053.98 is: 16,575.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,948.96 : 28,413.72 = 11,053.98 : x
  2. Step 2: Convert to fraction form
    18,948.96/28,413.72 = 11,053.98/x
  3. Step 3: Cross multiply
    18,948.96x = 28,413.72 × 11,053.98
  4. Step 4: Simplify right side
    18,948.96x = 314,084,692.61
  5. Step 5: Solve for x
    x = 314,084,692.61/18,948.96
  6. Step 6: Final answer
    x = 16,575.30

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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.