Home / 209,628,194.82-289,308,435.12-126,023,391.96

Finding the Fourth Proportional to 209,628,194.82, 289,308,435.12 and 126,023,391.96

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Solution

The fourth proportional to 209,628,194.82, 289,308,435.12 and 126,023,391.96 is: 173,925,221.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,628,194.82 : 289,308,435.12 = 126,023,391.96 : x
  2. Step 2: Convert to fraction form
    209,628,194.82/289,308,435.12 = 126,023,391.96/x
  3. Step 3: Cross multiply
    209,628,194.82x = 289,308,435.12 × 126,023,391.96
  4. Step 4: Simplify right side
    209,628,194.82x = 36,459,630,316,461,992
  5. Step 5: Solve for x
    x = 36,459,630,316,461,992/209,628,194.82
  6. Step 6: Final answer
    x = 173,925,221.98

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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.