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Finding the Fourth Proportional to 415,232.80, 622,790.06 and 130,886.40

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Solution

The fourth proportional to 415,232.80, 622,790.06 and 130,886.40 is: 196,310.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,232.80 : 622,790.06 = 130,886.40 : x
  2. Step 2: Convert to fraction form
    415,232.80/622,790.06 = 130,886.40/x
  3. Step 3: Cross multiply
    415,232.80x = 622,790.06 × 130,886.40
  4. Step 4: Simplify right side
    415,232.80x = 81,514,749,206.74
  5. Step 5: Solve for x
    x = 81,514,749,206.74/415,232.80
  6. Step 6: Final answer
    x = 196,310.96

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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.