Home / 20,221,490.40-30,332,235.60-19,185,180.45

Finding the Fourth Proportional to 20,221,490.40, 30,332,235.60 and 19,185,180.45

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Solution

The fourth proportional to 20,221,490.40, 30,332,235.60 and 19,185,180.45 is: 28,777,770.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221,490.40 : 30,332,235.60 = 19,185,180.45 : x
  2. Step 2: Convert to fraction form
    20,221,490.40/30,332,235.60 = 19,185,180.45/x
  3. Step 3: Cross multiply
    20,221,490.40x = 30,332,235.60 × 19,185,180.45
  4. Step 4: Simplify right side
    20,221,490.40x = 581,929,413,437,914
  5. Step 5: Solve for x
    x = 581,929,413,437,914/20,221,490.40
  6. Step 6: Final answer
    x = 28,777,770.68

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Double scale
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Similar ratio
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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.