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Finding the Fourth Proportional to 9,766.61, 13,483.68 and 6,415.27

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Solution

The fourth proportional to 9,766.61, 13,483.68 and 6,415.27 is: 8,856.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,766.61 : 13,483.68 = 6,415.27 : x
  2. Step 2: Convert to fraction form
    9,766.61/13,483.68 = 6,415.27/x
  3. Step 3: Cross multiply
    9,766.61x = 13,483.68 × 6,415.27
  4. Step 4: Simplify right side
    9,766.61x = 86,501,440.59
  5. Step 5: Solve for x
    x = 86,501,440.59/9,766.61
  6. Step 6: Final answer
    x = 8,856.85

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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.