Home / 43,678.08-65,516.40-12,512.64

Finding the Fourth Proportional to 43,678.08, 65,516.40 and 12,512.64

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Solution

The fourth proportional to 43,678.08, 65,516.40 and 12,512.64 is: 18,768.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,678.08 : 65,516.40 = 12,512.64 : x
  2. Step 2: Convert to fraction form
    43,678.08/65,516.40 = 12,512.64/x
  3. Step 3: Cross multiply
    43,678.08x = 65,516.40 × 12,512.64
  4. Step 4: Simplify right side
    43,678.08x = 819,783,127.30
  5. Step 5: Solve for x
    x = 819,783,127.30/43,678.08
  6. Step 6: Final answer
    x = 18,768.75

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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.