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Finding the Fourth Proportional to 295,625.12, 443,436.40 and 74,008.48

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Solution

The fourth proportional to 295,625.12, 443,436.40 and 74,008.48 is: 111,012.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,625.12 : 443,436.40 = 74,008.48 : x
  2. Step 2: Convert to fraction form
    295,625.12/443,436.40 = 74,008.48/x
  3. Step 3: Cross multiply
    295,625.12x = 443,436.40 × 74,008.48
  4. Step 4: Simplify right side
    295,625.12x = 32,818,053,940.67
  5. Step 5: Solve for x
    x = 32,818,053,940.67/295,625.12
  6. Step 6: Final answer
    x = 111,012.40

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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.