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Finding the Fourth Proportional to 70,462,763.60, 105,694,145.40 and 61,504,811.60

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Solution

The fourth proportional to 70,462,763.60, 105,694,145.40 and 61,504,811.60 is: 92,257,217.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,462,763.60 : 105,694,145.40 = 61,504,811.60 : x
  2. Step 2: Convert to fraction form
    70,462,763.60/105,694,145.40 = 61,504,811.60/x
  3. Step 3: Cross multiply
    70,462,763.60x = 105,694,145.40 × 61,504,811.60
  4. Step 4: Simplify right side
    70,462,763.60x = 6,500,698,500,050,007
  5. Step 5: Solve for x
    x = 6,500,698,500,050,007/70,462,763.60
  6. Step 6: Final answer
    x = 92,257,217.40

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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.