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Finding the Fourth Proportional to 618,814.33, 928,486.17 and 259,069.23

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Solution

The fourth proportional to 618,814.33, 928,486.17 and 259,069.23 is: 388,714.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,814.33 : 928,486.17 = 259,069.23 : x
  2. Step 2: Convert to fraction form
    618,814.33/928,486.17 = 259,069.23/x
  3. Step 3: Cross multiply
    618,814.33x = 928,486.17 × 259,069.23
  4. Step 4: Simplify right side
    618,814.33x = 240,542,197,127.55
  5. Step 5: Solve for x
    x = 240,542,197,127.55/618,814.33
  6. Step 6: Final answer
    x = 388,714.65

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1.5x scale

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.