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Finding the Fourth Proportional to 57,991,698.80, 87,015,541.80 and 40,915,602.80

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Solution

The fourth proportional to 57,991,698.80, 87,015,541.80 and 40,915,602.80 is: 61,393,154.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,991,698.80 : 87,015,541.80 = 40,915,602.80 : x
  2. Step 2: Convert to fraction form
    57,991,698.80/87,015,541.80 = 40,915,602.80/x
  3. Step 3: Cross multiply
    57,991,698.80x = 87,015,541.80 × 40,915,602.80
  4. Step 4: Simplify right side
    57,991,698.80x = 3,560,293,345,715,596.50
  5. Step 5: Solve for x
    x = 3,560,293,345,715,596.50/57,991,698.80
  6. Step 6: Final answer
    x = 61,393,154.87

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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.