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Finding the Fourth Proportional to 618,681.54, 853,900.27 and 403,447.94

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Solution

The fourth proportional to 618,681.54, 853,900.27 and 403,447.94 is: 556,836.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,681.54 : 853,900.27 = 403,447.94 : x
  2. Step 2: Convert to fraction form
    618,681.54/853,900.27 = 403,447.94/x
  3. Step 3: Cross multiply
    618,681.54x = 853,900.27 × 403,447.94
  4. Step 4: Simplify right side
    618,681.54x = 344,504,302,820.95
  5. Step 5: Solve for x
    x = 344,504,302,820.95/618,681.54
  6. Step 6: Final answer
    x = 556,836.24

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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.