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Finding the Fourth Proportional to 72,990.54, 109,476.34 and 23,075.67

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Solution

The fourth proportional to 72,990.54, 109,476.34 and 23,075.67 is: 34,610.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,990.54 : 109,476.34 = 23,075.67 : x
  2. Step 2: Convert to fraction form
    72,990.54/109,476.34 = 23,075.67/x
  3. Step 3: Cross multiply
    72,990.54x = 109,476.34 × 23,075.67
  4. Step 4: Simplify right side
    72,990.54x = 2,526,239,894.65
  5. Step 5: Solve for x
    x = 2,526,239,894.65/72,990.54
  6. Step 6: Final answer
    x = 34,610.51

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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.