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Finding the Fourth Proportional to 121,578.36, 182,391.18 and 46,693

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Solution

The fourth proportional to 121,578.36, 182,391.18 and 46,693 is: 70,048.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,578.36 : 182,391.18 = 46,693 : x
  2. Step 2: Convert to fraction form
    121,578.36/182,391.18 = 46,693/x
  3. Step 3: Cross multiply
    121,578.36x = 182,391.18 × 46,693
  4. Step 4: Simplify right side
    121,578.36x = 8,516,391,367.74
  5. Step 5: Solve for x
    x = 8,516,391,367.74/121,578.36
  6. Step 6: Final answer
    x = 70,048.58

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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.