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Finding the Fourth Proportional to 74,476.10, 111,713.15 and 18,316.68

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Solution

The fourth proportional to 74,476.10, 111,713.15 and 18,316.68 is: 27,474.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,476.10 : 111,713.15 = 18,316.68 : x
  2. Step 2: Convert to fraction form
    74,476.10/111,713.15 = 18,316.68/x
  3. Step 3: Cross multiply
    74,476.10x = 111,713.15 × 18,316.68
  4. Step 4: Simplify right side
    74,476.10x = 2,046,213,928.76
  5. Step 5: Solve for x
    x = 2,046,213,928.76/74,476.10
  6. Step 6: Final answer
    x = 27,474.77

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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.