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Finding the Fourth Proportional to 25,413.20, 38,062.20 and 15,045.20

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Solution

The fourth proportional to 25,413.20, 38,062.20 and 15,045.20 is: 22,533.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,413.20 : 38,062.20 = 15,045.20 : x
  2. Step 2: Convert to fraction form
    25,413.20/38,062.20 = 15,045.20/x
  3. Step 3: Cross multiply
    25,413.20x = 38,062.20 × 15,045.20
  4. Step 4: Simplify right side
    25,413.20x = 572,653,411.44
  5. Step 5: Solve for x
    x = 572,653,411.44/25,413.20
  6. Step 6: Final answer
    x = 22,533.70

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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.