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Finding the Fourth Proportional to 70,876,665.60, 106,314,998.40 and 70,204,819.20

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Solution

The fourth proportional to 70,876,665.60, 106,314,998.40 and 70,204,819.20 is: 105,307,228.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,876,665.60 : 106,314,998.40 = 70,204,819.20 : x
  2. Step 2: Convert to fraction form
    70,876,665.60/106,314,998.40 = 70,204,819.20/x
  3. Step 3: Cross multiply
    70,876,665.60x = 106,314,998.40 × 70,204,819.20
  4. Step 4: Simplify right side
    70,876,665.60x = 7,463,825,240,920,290
  5. Step 5: Solve for x
    x = 7,463,825,240,920,290/70,876,665.60
  6. Step 6: Final answer
    x = 105,307,228.80

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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.