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Finding the Fourth Proportional to 9,692.51, 13,376.61 and 5,918.18

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Solution

The fourth proportional to 9,692.51, 13,376.61 and 5,918.18 is: 8,167.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,692.51 : 13,376.61 = 5,918.18 : x
  2. Step 2: Convert to fraction form
    9,692.51/13,376.61 = 5,918.18/x
  3. Step 3: Cross multiply
    9,692.51x = 13,376.61 × 5,918.18
  4. Step 4: Simplify right side
    9,692.51x = 79,165,118.89
  5. Step 5: Solve for x
    x = 79,165,118.89/9,692.51
  6. Step 6: Final answer
    x = 8,167.66

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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.