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Finding the Fourth Proportional to 245,191.60, 338,364.71 and 137,761.57

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Solution

The fourth proportional to 245,191.60, 338,364.71 and 137,761.57 is: 190,111.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,191.60 : 338,364.71 = 137,761.57 : x
  2. Step 2: Convert to fraction form
    245,191.60/338,364.71 = 137,761.57/x
  3. Step 3: Cross multiply
    245,191.60x = 338,364.71 × 137,761.57
  4. Step 4: Simplify right side
    245,191.60x = 46,613,653,682.19
  5. Step 5: Solve for x
    x = 46,613,653,682.19/245,191.60
  6. Step 6: Final answer
    x = 190,111.14

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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.