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Finding the Fourth Proportional to 80,705.40, 113,104.20 and 80,705.40

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Solution

The fourth proportional to 80,705.40, 113,104.20 and 80,705.40 is: 113,104.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,705.40 : 113,104.20 = 80,705.40 : x
  2. Step 2: Convert to fraction form
    80,705.40/113,104.20 = 80,705.40/x
  3. Step 3: Cross multiply
    80,705.40x = 113,104.20 × 80,705.40
  4. Step 4: Simplify right side
    80,705.40x = 9,128,119,702.68
  5. Step 5: Solve for x
    x = 9,128,119,702.68/80,705.40
  6. Step 6: Final answer
    x = 113,104.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.