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Finding the Fourth Proportional to 69,210.96, 103,804.68 and 19,296.03

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Solution

The fourth proportional to 69,210.96, 103,804.68 and 19,296.03 is: 28,940.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,210.96 : 103,804.68 = 19,296.03 : x
  2. Step 2: Convert to fraction form
    69,210.96/103,804.68 = 19,296.03/x
  3. Step 3: Cross multiply
    69,210.96x = 103,804.68 × 19,296.03
  4. Step 4: Simplify right side
    69,210.96x = 2,003,018,219.42
  5. Step 5: Solve for x
    x = 2,003,018,219.42/69,210.96
  6. Step 6: Final answer
    x = 28,940.77

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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.