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Finding the Fourth Proportional to 368,303.90, 508,329.21 and 230,546.90

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Solution

The fourth proportional to 368,303.90, 508,329.21 and 230,546.90 is: 318,198.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,303.90 : 508,329.21 = 230,546.90 : x
  2. Step 2: Convert to fraction form
    368,303.90/508,329.21 = 230,546.90/x
  3. Step 3: Cross multiply
    368,303.90x = 508,329.21 × 230,546.90
  4. Step 4: Simplify right side
    368,303.90x = 117,193,721,003.30
  5. Step 5: Solve for x
    x = 117,193,721,003.30/368,303.90
  6. Step 6: Final answer
    x = 318,198.43

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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.