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Finding the Fourth Proportional to 9,413.54, 12,986.98 and 6,580.16

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Solution

The fourth proportional to 9,413.54, 12,986.98 and 6,580.16 is: 9,078.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,413.54 : 12,986.98 = 6,580.16 : x
  2. Step 2: Convert to fraction form
    9,413.54/12,986.98 = 6,580.16/x
  3. Step 3: Cross multiply
    9,413.54x = 12,986.98 × 6,580.16
  4. Step 4: Simplify right side
    9,413.54x = 85,456,341.38
  5. Step 5: Solve for x
    x = 85,456,341.38/9,413.54
  6. Step 6: Final answer
    x = 9,078.03

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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.