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Finding the Fourth Proportional to 238,515.55, 357,770.80 and 61,021.15

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Solution

The fourth proportional to 238,515.55, 357,770.80 and 61,021.15 is: 91,531.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,515.55 : 357,770.80 = 61,021.15 : x
  2. Step 2: Convert to fraction form
    238,515.55/357,770.80 = 61,021.15/x
  3. Step 3: Cross multiply
    238,515.55x = 357,770.80 × 61,021.15
  4. Step 4: Simplify right side
    238,515.55x = 21,831,585,652.42
  5. Step 5: Solve for x
    x = 21,831,585,652.42/238,515.55
  6. Step 6: Final answer
    x = 91,531.08

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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.