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Finding the Fourth Proportional to 28,700.69, 43,051.84 and 7,924.19

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Solution

The fourth proportional to 28,700.69, 43,051.84 and 7,924.19 is: 11,886.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,700.69 : 43,051.84 = 7,924.19 : x
  2. Step 2: Convert to fraction form
    28,700.69/43,051.84 = 7,924.19/x
  3. Step 3: Cross multiply
    28,700.69x = 43,051.84 × 7,924.19
  4. Step 4: Simplify right side
    28,700.69x = 341,150,724.94
  5. Step 5: Solve for x
    x = 341,150,724.94/28,700.69
  6. Step 6: Final answer
    x = 11,886.50

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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.