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Finding the Fourth Proportional to 19,065.75, 28,582.86 and 9,065.10

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Solution

The fourth proportional to 19,065.75, 28,582.86 and 9,065.10 is: 13,590.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,065.75 : 28,582.86 = 9,065.10 : x
  2. Step 2: Convert to fraction form
    19,065.75/28,582.86 = 9,065.10/x
  3. Step 3: Cross multiply
    19,065.75x = 28,582.86 × 9,065.10
  4. Step 4: Simplify right side
    19,065.75x = 259,106,413.60
  5. Step 5: Solve for x
    x = 259,106,413.60/19,065.75
  6. Step 6: Final answer
    x = 13,590.15

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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.