Home / 45,638.80-68,428.60-19,336.40

Finding the Fourth Proportional to 45,638.80, 68,428.60 and 19,336.40

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Solution

The fourth proportional to 45,638.80, 68,428.60 and 19,336.40 is: 28,992.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,638.80 : 68,428.60 = 19,336.40 : x
  2. Step 2: Convert to fraction form
    45,638.80/68,428.60 = 19,336.40/x
  3. Step 3: Cross multiply
    45,638.80x = 68,428.60 × 19,336.40
  4. Step 4: Simplify right side
    45,638.80x = 1,323,162,781.04
  5. Step 5: Solve for x
    x = 1,323,162,781.04/45,638.80
  6. Step 6: Final answer
    x = 28,992.06

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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.