Home / 30,699,987.55-42,385,102.61-19,542,775.88

Finding the Fourth Proportional to 30,699,987.55, 42,385,102.61 and 19,542,775.88

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Solution

The fourth proportional to 30,699,987.55, 42,385,102.61 and 19,542,775.88 is: 26,981,201.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,699,987.55 : 42,385,102.61 = 19,542,775.88 : x
  2. Step 2: Convert to fraction form
    30,699,987.55/42,385,102.61 = 19,542,775.88/x
  3. Step 3: Cross multiply
    30,699,987.55x = 42,385,102.61 × 19,542,775.88
  4. Step 4: Simplify right side
    30,699,987.55x = 828,322,560,958,033
  5. Step 5: Solve for x
    x = 828,322,560,958,033/30,699,987.55
  6. Step 6: Final answer
    x = 26,981,201.85

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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.