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Finding the Fourth Proportional to 326,805.84, 490,069.44 and 124,367.40

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Solution

The fourth proportional to 326,805.84, 490,069.44 and 124,367.40 is: 186,498.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,805.84 : 490,069.44 = 124,367.40 : x
  2. Step 2: Convert to fraction form
    326,805.84/490,069.44 = 124,367.40/x
  3. Step 3: Cross multiply
    326,805.84x = 490,069.44 × 124,367.40
  4. Step 4: Simplify right side
    326,805.84x = 60,948,662,072.26
  5. Step 5: Solve for x
    x = 60,948,662,072.26/326,805.84
  6. Step 6: Final answer
    x = 186,498.08

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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.