Home / 30,430,605.60-41,998,542.12-18,831,905.64

Finding the Fourth Proportional to 30,430,605.60, 41,998,542.12 and 18,831,905.64

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Solution

The fourth proportional to 30,430,605.60, 41,998,542.12 and 18,831,905.64 is: 25,990,694.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,430,605.60 : 41,998,542.12 = 18,831,905.64 : x
  2. Step 2: Convert to fraction form
    30,430,605.60/41,998,542.12 = 18,831,905.64/x
  3. Step 3: Cross multiply
    30,430,605.60x = 41,998,542.12 × 18,831,905.64
  4. Step 4: Simplify right side
    30,430,605.60x = 790,912,582,221,405.50
  5. Step 5: Solve for x
    x = 790,912,582,221,405.50/30,430,605.60
  6. Step 6: Final answer
    x = 25,990,694.78

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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.