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Finding the Fourth Proportional to 874,455,869.60, 1,311,494,847.60 and 383,168,189.60

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Solution

The fourth proportional to 874,455,869.60, 1,311,494,847.60 and 383,168,189.60 is: 574,669,487.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,455,869.60 : 1,311,494,847.60 = 383,168,189.60 : x
  2. Step 2: Convert to fraction form
    874,455,869.60/1,311,494,847.60 = 383,168,189.60/x
  3. Step 3: Cross multiply
    874,455,869.60x = 1,311,494,847.60 × 383,168,189.60
  4. Step 4: Simplify right side
    874,455,869.60x = 502,523,106,424,619,904
  5. Step 5: Solve for x
    x = 502,523,106,424,619,904/874,455,869.60
  6. Step 6: Final answer
    x = 574,669,487.50

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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.