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Finding the Fourth Proportional to 66,543.96, 99,076.95 and 65,613.96

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Solution

The fourth proportional to 66,543.96, 99,076.95 and 65,613.96 is: 97,692.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,543.96 : 99,076.95 = 65,613.96 : x
  2. Step 2: Convert to fraction form
    66,543.96/99,076.95 = 65,613.96/x
  3. Step 3: Cross multiply
    66,543.96x = 99,076.95 × 65,613.96
  4. Step 4: Simplify right side
    66,543.96x = 6,500,831,034.22
  5. Step 5: Solve for x
    x = 6,500,831,034.22/66,543.96
  6. Step 6: Final answer
    x = 97,692.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.