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Finding the Fourth Proportional to 398,466.99, 549,884.65 and 226,385.25

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Solution

The fourth proportional to 398,466.99, 549,884.65 and 226,385.25 is: 312,411.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,466.99 : 549,884.65 = 226,385.25 : x
  2. Step 2: Convert to fraction form
    398,466.99/549,884.65 = 226,385.25/x
  3. Step 3: Cross multiply
    398,466.99x = 549,884.65 × 226,385.25
  4. Step 4: Simplify right side
    398,466.99x = 124,485,774,850.96
  5. Step 5: Solve for x
    x = 124,485,774,850.96/398,466.99
  6. Step 6: Final answer
    x = 312,411.76

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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.