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Finding the Fourth Proportional to 398,310.89, 549,417.94 and 237,045.56

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Solution

The fourth proportional to 398,310.89, 549,417.94 and 237,045.56 is: 326,973.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,310.89 : 549,417.94 = 237,045.56 : x
  2. Step 2: Convert to fraction form
    398,310.89/549,417.94 = 237,045.56/x
  3. Step 3: Cross multiply
    398,310.89x = 549,417.94 × 237,045.56
  4. Step 4: Simplify right side
    398,310.89x = 130,237,083,261.35
  5. Step 5: Solve for x
    x = 130,237,083,261.35/398,310.89
  6. Step 6: Final answer
    x = 326,973.44

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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.