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Finding the Fourth Proportional to 618,587.22, 853,609.94 and 363,889.20

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Solution

The fourth proportional to 618,587.22, 853,609.94 and 363,889.20 is: 502,143.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,587.22 : 853,609.94 = 363,889.20 : x
  2. Step 2: Convert to fraction form
    618,587.22/853,609.94 = 363,889.20/x
  3. Step 3: Cross multiply
    618,587.22x = 853,609.94 × 363,889.20
  4. Step 4: Simplify right side
    618,587.22x = 310,619,438,178.65
  5. Step 5: Solve for x
    x = 310,619,438,178.65/618,587.22
  6. Step 6: Final answer
    x = 502,143.32

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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.