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Finding the Fourth Proportional to 132,595,894.80, 198,893,842.20 and 121,116,769.20

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Solution

The fourth proportional to 132,595,894.80, 198,893,842.20 and 121,116,769.20 is: 181,675,153.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,595,894.80 : 198,893,842.20 = 121,116,769.20 : x
  2. Step 2: Convert to fraction form
    132,595,894.80/198,893,842.20 = 121,116,769.20/x
  3. Step 3: Cross multiply
    132,595,894.80x = 198,893,842.20 × 121,116,769.20
  4. Step 4: Simplify right side
    132,595,894.80x = 24,089,379,581,038,620
  5. Step 5: Solve for x
    x = 24,089,379,581,038,620/132,595,894.80
  6. Step 6: Final answer
    x = 181,675,153.80

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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.