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Finding the Fourth Proportional to 79,316.56, 109,455.83 and 45,324.66

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Solution

The fourth proportional to 79,316.56, 109,455.83 and 45,324.66 is: 62,547.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,316.56 : 109,455.83 = 45,324.66 : x
  2. Step 2: Convert to fraction form
    79,316.56/109,455.83 = 45,324.66/x
  3. Step 3: Cross multiply
    79,316.56x = 109,455.83 × 45,324.66
  4. Step 4: Simplify right side
    79,316.56x = 4,961,047,505.87
  5. Step 5: Solve for x
    x = 4,961,047,505.87/79,316.56
  6. Step 6: Final answer
    x = 62,547.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.