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Finding the Fourth Proportional to 618,544.12, 853,576.40 and 363,911.68

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Solution

The fourth proportional to 618,544.12, 853,576.40 and 363,911.68 is: 502,189.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,544.12 : 853,576.40 = 363,911.68 : x
  2. Step 2: Convert to fraction form
    618,544.12/853,576.40 = 363,911.68/x
  3. Step 3: Cross multiply
    618,544.12x = 853,576.40 × 363,911.68
  4. Step 4: Simplify right side
    618,544.12x = 310,626,421,732.35
  5. Step 5: Solve for x
    x = 310,626,421,732.35/618,544.12
  6. Step 6: Final answer
    x = 502,189.60

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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.