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Finding the Fourth Proportional to 7,875.93, 10,867.86 and 4,518.21

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Solution

The fourth proportional to 7,875.93, 10,867.86 and 4,518.21 is: 6,234.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.93 : 10,867.86 = 4,518.21 : x
  2. Step 2: Convert to fraction form
    7,875.93/10,867.86 = 4,518.21/x
  3. Step 3: Cross multiply
    7,875.93x = 10,867.86 × 4,518.21
  4. Step 4: Simplify right side
    7,875.93x = 49,103,273.73
  5. Step 5: Solve for x
    x = 49,103,273.73/7,875.93
  6. Step 6: Final answer
    x = 6,234.60

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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.