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Finding the Fourth Proportional to 290,111, 435,833.58 and 206,075.48

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Solution

The fourth proportional to 290,111, 435,833.58 and 206,075.48 is: 309,587.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,111 : 435,833.58 = 206,075.48 : x
  2. Step 2: Convert to fraction form
    290,111/435,833.58 = 206,075.48/x
  3. Step 3: Cross multiply
    290,111x = 435,833.58 × 206,075.48
  4. Step 4: Simplify right side
    290,111x = 89,814,614,198.62
  5. Step 5: Solve for x
    x = 89,814,614,198.62/290,111
  6. Step 6: Final answer
    x = 309,587.07

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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.