Home / 69,130.05-103,680.90-19,197.60

Finding the Fourth Proportional to 69,130.05, 103,680.90 and 19,197.60

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Solution

The fourth proportional to 69,130.05, 103,680.90 and 19,197.60 is: 28,792.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,130.05 : 103,680.90 = 19,197.60 : x
  2. Step 2: Convert to fraction form
    69,130.05/103,680.90 = 19,197.60/x
  3. Step 3: Cross multiply
    69,130.05x = 103,680.90 × 19,197.60
  4. Step 4: Simplify right side
    69,130.05x = 1,990,424,445.84
  5. Step 5: Solve for x
    x = 1,990,424,445.84/69,130.05
  6. Step 6: Final answer
    x = 28,792.46

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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.