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Finding the Fourth Proportional to 115,486.40, 173,294.40 and 48,915.20

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Solution

The fourth proportional to 115,486.40, 173,294.40 and 48,915.20 is: 73,400.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,486.40 : 173,294.40 = 48,915.20 : x
  2. Step 2: Convert to fraction form
    115,486.40/173,294.40 = 48,915.20/x
  3. Step 3: Cross multiply
    115,486.40x = 173,294.40 × 48,915.20
  4. Step 4: Simplify right side
    115,486.40x = 8,476,730,234.88
  5. Step 5: Solve for x
    x = 8,476,730,234.88/115,486.40
  6. Step 6: Final answer
    x = 73,400.25

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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.