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Finding the Fourth Proportional to 80,831,749.60, 121,247,624.40 and 80,831,749.60

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Solution

The fourth proportional to 80,831,749.60, 121,247,624.40 and 80,831,749.60 is: 121,247,624.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,831,749.60 : 121,247,624.40 = 80,831,749.60 : x
  2. Step 2: Convert to fraction form
    80,831,749.60/121,247,624.40 = 80,831,749.60/x
  3. Step 3: Cross multiply
    80,831,749.60x = 121,247,624.40 × 80,831,749.60
  4. Step 4: Simplify right side
    80,831,749.60x = 9,800,657,615,095,650
  5. Step 5: Solve for x
    x = 9,800,657,615,095,650/80,831,749.60
  6. Step 6: Final answer
    x = 121,247,624.40

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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.