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Finding the Fourth Proportional to 70,859,953.80, 106,289,930.70 and 35,028,145.80

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Solution

The fourth proportional to 70,859,953.80, 106,289,930.70 and 35,028,145.80 is: 52,542,218.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,859,953.80 : 106,289,930.70 = 35,028,145.80 : x
  2. Step 2: Convert to fraction form
    70,859,953.80/106,289,930.70 = 35,028,145.80/x
  3. Step 3: Cross multiply
    70,859,953.80x = 106,289,930.70 × 35,028,145.80
  4. Step 4: Simplify right side
    70,859,953.80x = 3,723,139,189,631,496
  5. Step 5: Solve for x
    x = 3,723,139,189,631,496/70,859,953.80
  6. Step 6: Final answer
    x = 52,542,218.70

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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.