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Finding the Fourth Proportional to 871,314,928.60, 1,222,902,000.20 and 871,314,928.60

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Solution

The fourth proportional to 871,314,928.60, 1,222,902,000.20 and 871,314,928.60 is: 1,222,902,000.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,314,928.60 : 1,222,902,000.20 = 871,314,928.60 : x
  2. Step 2: Convert to fraction form
    871,314,928.60/1,222,902,000.20 = 871,314,928.60/x
  3. Step 3: Cross multiply
    871,314,928.60x = 1,222,902,000.20 × 871,314,928.60
  4. Step 4: Simplify right side
    871,314,928.60x = 1,065,532,768,989,060,224
  5. Step 5: Solve for x
    x = 1,065,532,768,989,060,224/871,314,928.60
  6. Step 6: Final answer
    x = 1,222,902,000.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.