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Finding the Fourth Proportional to 66,692.16, 100,108.72 and 65,186.22

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Solution

The fourth proportional to 66,692.16, 100,108.72 and 65,186.22 is: 97,848.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,692.16 : 100,108.72 = 65,186.22 : x
  2. Step 2: Convert to fraction form
    66,692.16/100,108.72 = 65,186.22/x
  3. Step 3: Cross multiply
    66,692.16x = 100,108.72 × 65,186.22
  4. Step 4: Simplify right side
    66,692.16x = 6,525,709,045.84
  5. Step 5: Solve for x
    x = 6,525,709,045.84/66,692.16
  6. Step 6: Final answer
    x = 97,848.22

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Why These Related Problems?

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