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Finding the Fourth Proportional to 245,191.55, 338,364.62 and 137,761.52

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Solution

The fourth proportional to 245,191.55, 338,364.62 and 137,761.52 is: 190,111.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,191.55 : 338,364.62 = 137,761.52 : x
  2. Step 2: Convert to fraction form
    245,191.55/338,364.62 = 137,761.52/x
  3. Step 3: Cross multiply
    245,191.55x = 338,364.62 × 137,761.52
  4. Step 4: Simplify right side
    245,191.55x = 46,613,621,984.79
  5. Step 5: Solve for x
    x = 46,613,621,984.79/245,191.55
  6. Step 6: Final answer
    x = 190,111.05

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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.