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Finding the Fourth Proportional to 874,059,881.60, 1,311,089,822.40 and 874,059,881.60

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Solution

The fourth proportional to 874,059,881.60, 1,311,089,822.40 and 874,059,881.60 is: 1,311,089,822.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,059,881.60 : 1,311,089,822.40 = 874,059,881.60 : x
  2. Step 2: Convert to fraction form
    874,059,881.60/1,311,089,822.40 = 874,059,881.60/x
  3. Step 3: Cross multiply
    874,059,881.60x = 1,311,089,822.40 × 874,059,881.60
  4. Step 4: Simplify right side
    874,059,881.60x = 1,145,971,014,933,909,120
  5. Step 5: Solve for x
    x = 1,145,971,014,933,909,120/874,059,881.60
  6. Step 6: Final answer
    x = 1,311,089,822.40

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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.