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Finding the Fourth Proportional to 245,615.35, 338,947.77 and 138,186.13

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Solution

The fourth proportional to 245,615.35, 338,947.77 and 138,186.13 is: 190,696.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,615.35 : 338,947.77 = 138,186.13 : x
  2. Step 2: Convert to fraction form
    245,615.35/338,947.77 = 138,186.13/x
  3. Step 3: Cross multiply
    245,615.35x = 338,947.77 × 138,186.13
  4. Step 4: Simplify right side
    245,615.35x = 46,837,880,608.43
  5. Step 5: Solve for x
    x = 46,837,880,608.43/245,615.35
  6. Step 6: Final answer
    x = 190,696.06

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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.