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Finding the Fourth Proportional to 245,195.85, 338,370.57 and 137,765.82

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Solution

The fourth proportional to 245,195.85, 338,370.57 and 137,765.82 is: 190,117.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,195.85 : 338,370.57 = 137,765.82 : x
  2. Step 2: Convert to fraction form
    245,195.85/338,370.57 = 137,765.82/x
  3. Step 3: Cross multiply
    245,195.85x = 338,370.57 × 137,765.82
  4. Step 4: Simplify right side
    245,195.85x = 46,615,899,039.92
  5. Step 5: Solve for x
    x = 46,615,899,039.92/245,195.85
  6. Step 6: Final answer
    x = 190,117.00

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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.