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Finding the Fourth Proportional to 79,242.65, 118,038.26 and 75,035.33

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Solution

The fourth proportional to 79,242.65, 118,038.26 and 75,035.33 is: 111,771.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,242.65 : 118,038.26 = 75,035.33 : x
  2. Step 2: Convert to fraction form
    79,242.65/118,038.26 = 75,035.33/x
  3. Step 3: Cross multiply
    79,242.65x = 118,038.26 × 75,035.33
  4. Step 4: Simplify right side
    79,242.65x = 8,857,038,826.36
  5. Step 5: Solve for x
    x = 8,857,038,826.36/79,242.65
  6. Step 6: Final answer
    x = 111,771.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.