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Finding the Fourth Proportional to 20,356,831,437.60, 30,492,248,986.80 and 20,356,831,437.60

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Solution

The fourth proportional to 20,356,831,437.60, 30,492,248,986.80 and 20,356,831,437.60 is: 30,492,248,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356,831,437.60 : 30,492,248,986.80 = 20,356,831,437.60 : x
  2. Step 2: Convert to fraction form
    20,356,831,437.60/30,492,248,986.80 = 20,356,831,437.60/x
  3. Step 3: Cross multiply
    20,356,831,437.60x = 30,492,248,986.80 × 20,356,831,437.60
  4. Step 4: Simplify right side
    20,356,831,437.60x = 620,725,572,777,616,867,328
  5. Step 5: Solve for x
    x = 620,725,572,777,616,867,328/20,356,831,437.60
  6. Step 6: Final answer
    x = 30,492,248,986.80

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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.