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Finding the Fourth Proportional to 70,470,369.90, 105,705,554.85 and 70,470,369.90

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Solution

The fourth proportional to 70,470,369.90, 105,705,554.85 and 70,470,369.90 is: 105,705,554.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,470,369.90 : 105,705,554.85 = 70,470,369.90 : x
  2. Step 2: Convert to fraction form
    70,470,369.90/105,705,554.85 = 70,470,369.90/x
  3. Step 3: Cross multiply
    70,470,369.90x = 105,705,554.85 × 70,470,369.90
  4. Step 4: Simplify right side
    70,470,369.90x = 7,449,109,550,764,239
  5. Step 5: Solve for x
    x = 7,449,109,550,764,239/70,470,369.90
  6. Step 6: Final answer
    x = 105,705,554.85

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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.