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Finding the Fourth Proportional to 28,566.84, 39,413.13 and 18,503.00

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Solution

The fourth proportional to 28,566.84, 39,413.13 and 18,503.00 is: 25,528.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,566.84 : 39,413.13 = 18,503.00 : x
  2. Step 2: Convert to fraction form
    28,566.84/39,413.13 = 18,503.00/x
  3. Step 3: Cross multiply
    28,566.84x = 39,413.13 × 18,503.00
  4. Step 4: Simplify right side
    28,566.84x = 729,261,129.82
  5. Step 5: Solve for x
    x = 729,261,129.82/28,566.84
  6. Step 6: Final answer
    x = 25,528.24

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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.