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Finding the Fourth Proportional to 66,459.75, 99,719.01 and 34,862.28

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Solution

The fourth proportional to 66,459.75, 99,719.01 and 34,862.28 is: 52,308.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,459.75 : 99,719.01 = 34,862.28 : x
  2. Step 2: Convert to fraction form
    66,459.75/99,719.01 = 34,862.28/x
  3. Step 3: Cross multiply
    66,459.75x = 99,719.01 × 34,862.28
  4. Step 4: Simplify right side
    66,459.75x = 3,476,432,047.94
  5. Step 5: Solve for x
    x = 3,476,432,047.94/66,459.75
  6. Step 6: Final answer
    x = 52,308.83

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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.