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Finding the Fourth Proportional to 29,908.54, 44,862.98 and 7,720.40

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Solution

The fourth proportional to 29,908.54, 44,862.98 and 7,720.40 is: 11,580.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,908.54 : 44,862.98 = 7,720.40 : x
  2. Step 2: Convert to fraction form
    29,908.54/44,862.98 = 7,720.40/x
  3. Step 3: Cross multiply
    29,908.54x = 44,862.98 × 7,720.40
  4. Step 4: Simplify right side
    29,908.54x = 346,359,887.88
  5. Step 5: Solve for x
    x = 346,359,887.88/29,908.54
  6. Step 6: Final answer
    x = 11,580.64

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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.