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Finding the Fourth Proportional to 317,570.43, 438,230.79 and 188,514.30

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Solution

The fourth proportional to 317,570.43, 438,230.79 and 188,514.30 is: 260,140.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,570.43 : 438,230.79 = 188,514.30 : x
  2. Step 2: Convert to fraction form
    317,570.43/438,230.79 = 188,514.30/x
  3. Step 3: Cross multiply
    317,570.43x = 438,230.79 × 188,514.30
  4. Step 4: Simplify right side
    317,570.43x = 82,612,770,615.30
  5. Step 5: Solve for x
    x = 82,612,770,615.30/317,570.43
  6. Step 6: Final answer
    x = 260,140.00

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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.