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Finding the Fourth Proportional to 29,248.88, 43,878.96 and 11,720.48

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Solution

The fourth proportional to 29,248.88, 43,878.96 and 11,720.48 is: 17,582.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,248.88 : 43,878.96 = 11,720.48 : x
  2. Step 2: Convert to fraction form
    29,248.88/43,878.96 = 11,720.48/x
  3. Step 3: Cross multiply
    29,248.88x = 43,878.96 × 11,720.48
  4. Step 4: Simplify right side
    29,248.88x = 514,282,473.10
  5. Step 5: Solve for x
    x = 514,282,473.10/29,248.88
  6. Step 6: Final answer
    x = 17,582.98

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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.