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Finding the Fourth Proportional to 8,565.91, 12,840.12 and 4,860.32

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Solution

The fourth proportional to 8,565.91, 12,840.12 and 4,860.32 is: 7,285.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,565.91 : 12,840.12 = 4,860.32 : x
  2. Step 2: Convert to fraction form
    8,565.91/12,840.12 = 4,860.32/x
  3. Step 3: Cross multiply
    8,565.91x = 12,840.12 × 4,860.32
  4. Step 4: Simplify right side
    8,565.91x = 62,407,045.89
  5. Step 5: Solve for x
    x = 62,407,045.89/8,565.91
  6. Step 6: Final answer
    x = 7,285.51

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.