Home / 30,699,988.05-42,385,103.30-19,542,776.38

Finding the Fourth Proportional to 30,699,988.05, 42,385,103.30 and 19,542,776.38

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Solution

The fourth proportional to 30,699,988.05, 42,385,103.30 and 19,542,776.38 is: 26,981,202.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,699,988.05 : 42,385,103.30 = 19,542,776.38 : x
  2. Step 2: Convert to fraction form
    30,699,988.05/42,385,103.30 = 19,542,776.38/x
  3. Step 3: Cross multiply
    30,699,988.05x = 42,385,103.30 × 19,542,776.38
  4. Step 4: Simplify right side
    30,699,988.05x = 828,322,595,635,100
  5. Step 5: Solve for x
    x = 828,322,595,635,100/30,699,988.05
  6. Step 6: Final answer
    x = 26,981,202.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.