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Finding the Fourth Proportional to 360,915.12, 541,186.14 and 158,428.35

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Solution

The fourth proportional to 360,915.12, 541,186.14 and 158,428.35 is: 237,560.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,915.12 : 541,186.14 = 158,428.35 : x
  2. Step 2: Convert to fraction form
    360,915.12/541,186.14 = 158,428.35/x
  3. Step 3: Cross multiply
    360,915.12x = 541,186.14 × 158,428.35
  4. Step 4: Simplify right side
    360,915.12x = 85,739,227,203.07
  5. Step 5: Solve for x
    x = 85,739,227,203.07/360,915.12
  6. Step 6: Final answer
    x = 237,560.64

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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.