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Finding the Fourth Proportional to 618,215.76, 853,429.92 and 414,399.81

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Solution

The fourth proportional to 618,215.76, 853,429.92 and 414,399.81 is: 572,067.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,215.76 : 853,429.92 = 414,399.81 : x
  2. Step 2: Convert to fraction form
    618,215.76/853,429.92 = 414,399.81/x
  3. Step 3: Cross multiply
    618,215.76x = 853,429.92 × 414,399.81
  4. Step 4: Simplify right side
    618,215.76x = 353,661,196,696.32
  5. Step 5: Solve for x
    x = 353,661,196,696.32/618,215.76
  6. Step 6: Final answer
    x = 572,067.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.