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Finding the Fourth Proportional to 497,290.39, 745,308.34 and 212,644.44

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Solution

The fourth proportional to 497,290.39, 745,308.34 and 212,644.44 is: 318,698.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,290.39 : 745,308.34 = 212,644.44 : x
  2. Step 2: Convert to fraction form
    497,290.39/745,308.34 = 212,644.44/x
  3. Step 3: Cross multiply
    497,290.39x = 745,308.34 × 212,644.44
  4. Step 4: Simplify right side
    497,290.39x = 158,485,674,055.02
  5. Step 5: Solve for x
    x = 158,485,674,055.02/497,290.39
  6. Step 6: Final answer
    x = 318,698.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.