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Finding the Fourth Proportional to 260,556.84, 390,866.79 and 92,042.69

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Solution

The fourth proportional to 260,556.84, 390,866.79 and 92,042.69 is: 138,075.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,556.84 : 390,866.79 = 92,042.69 : x
  2. Step 2: Convert to fraction form
    260,556.84/390,866.79 = 92,042.69/x
  3. Step 3: Cross multiply
    260,556.84x = 390,866.79 × 92,042.69
  4. Step 4: Simplify right side
    260,556.84x = 35,976,430,783.27
  5. Step 5: Solve for x
    x = 35,976,430,783.27/260,556.84
  6. Step 6: Final answer
    x = 138,075.17

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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.