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Finding the Fourth Proportional to 445,514.76, 668,271.96 and 129,971.52

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Solution

The fourth proportional to 445,514.76, 668,271.96 and 129,971.52 is: 194,957.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,514.76 : 668,271.96 = 129,971.52 : x
  2. Step 2: Convert to fraction form
    445,514.76/668,271.96 = 129,971.52/x
  3. Step 3: Cross multiply
    445,514.76x = 668,271.96 × 129,971.52
  4. Step 4: Simplify right side
    445,514.76x = 86,856,322,414.58
  5. Step 5: Solve for x
    x = 86,856,322,414.58/445,514.76
  6. Step 6: Final answer
    x = 194,957.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.