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Finding the Fourth Proportional to 618,653.36, 853,801.56 and 346,767.44

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Solution

The fourth proportional to 618,653.36, 853,801.56 and 346,767.44 is: 478,572.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,653.36 : 853,801.56 = 346,767.44 : x
  2. Step 2: Convert to fraction form
    618,653.36/853,801.56 = 346,767.44/x
  3. Step 3: Cross multiply
    618,653.36x = 853,801.56 × 346,767.44
  4. Step 4: Simplify right side
    618,653.36x = 296,070,581,229.21
  5. Step 5: Solve for x
    x = 296,070,581,229.21/618,653.36
  6. Step 6: Final answer
    x = 478,572.66

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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.