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Finding the Fourth Proportional to 23,341.92, 34,978.30 and 19,211.28

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Solution

The fourth proportional to 23,341.92, 34,978.30 and 19,211.28 is: 28,788.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,341.92 : 34,978.30 = 19,211.28 : x
  2. Step 2: Convert to fraction form
    23,341.92/34,978.30 = 19,211.28/x
  3. Step 3: Cross multiply
    23,341.92x = 34,978.30 × 19,211.28
  4. Step 4: Simplify right side
    23,341.92x = 671,977,915.22
  5. Step 5: Solve for x
    x = 671,977,915.22/23,341.92
  6. Step 6: Final answer
    x = 28,788.46

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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.