Home / 30,699,999.08-42,385,118.52-19,542,787.39

Finding the Fourth Proportional to 30,699,999.08, 42,385,118.52 and 19,542,787.39

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Solution

The fourth proportional to 30,699,999.08, 42,385,118.52 and 19,542,787.39 is: 26,981,217.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,699,999.08 : 42,385,118.52 = 19,542,787.39 : x
  2. Step 2: Convert to fraction form
    30,699,999.08/42,385,118.52 = 19,542,787.39/x
  3. Step 3: Cross multiply
    30,699,999.08x = 42,385,118.52 × 19,542,787.39
  4. Step 4: Simplify right side
    30,699,999.08x = 828,323,359,736,311.50
  5. Step 5: Solve for x
    x = 828,323,359,736,311.50/30,699,999.08
  6. Step 6: Final answer
    x = 26,981,217.74

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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.