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Finding the Fourth Proportional to 130,699.73, 195,733.83 and 74,369.18

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Solution

The fourth proportional to 130,699.73, 195,733.83 and 74,369.18 is: 111,374.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,699.73 : 195,733.83 = 74,369.18 : x
  2. Step 2: Convert to fraction form
    130,699.73/195,733.83 = 74,369.18/x
  3. Step 3: Cross multiply
    130,699.73x = 195,733.83 × 74,369.18
  4. Step 4: Simplify right side
    130,699.73x = 14,556,564,435.36
  5. Step 5: Solve for x
    x = 14,556,564,435.36/130,699.73
  6. Step 6: Final answer
    x = 111,374.10

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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.