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Finding the Fourth Proportional to 8,671.68, 11,966.95 and 4,692.79

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Solution

The fourth proportional to 8,671.68, 11,966.95 and 4,692.79 is: 6,476.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671.68 : 11,966.95 = 4,692.79 : x
  2. Step 2: Convert to fraction form
    8,671.68/11,966.95 = 4,692.79/x
  3. Step 3: Cross multiply
    8,671.68x = 11,966.95 × 4,692.79
  4. Step 4: Simplify right side
    8,671.68x = 56,158,413.21
  5. Step 5: Solve for x
    x = 56,158,413.21/8,671.68
  6. Step 6: Final answer
    x = 6,476.07

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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.