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Finding the Fourth Proportional to 228,315.48, 315,074.16 and 131,483.94

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Solution

The fourth proportional to 228,315.48, 315,074.16 and 131,483.94 is: 181,447.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,315.48 : 315,074.16 = 131,483.94 : x
  2. Step 2: Convert to fraction form
    228,315.48/315,074.16 = 131,483.94/x
  3. Step 3: Cross multiply
    228,315.48x = 315,074.16 × 131,483.94
  4. Step 4: Simplify right side
    228,315.48x = 41,427,191,948.99
  5. Step 5: Solve for x
    x = 41,427,191,948.99/228,315.48
  6. Step 6: Final answer
    x = 181,447.14

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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.