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Finding the Fourth Proportional to 217,220,828.40, 325,831,242.60 and 217,220,828.40

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Solution

The fourth proportional to 217,220,828.40, 325,831,242.60 and 217,220,828.40 is: 325,831,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,220,828.40 : 325,831,242.60 = 217,220,828.40 : x
  2. Step 2: Convert to fraction form
    217,220,828.40/325,831,242.60 = 217,220,828.40/x
  3. Step 3: Cross multiply
    217,220,828.40x = 325,831,242.60 × 217,220,828.40
  4. Step 4: Simplify right side
    217,220,828.40x = 70,777,332,436,173,376
  5. Step 5: Solve for x
    x = 70,777,332,436,173,376/217,220,828.40
  6. Step 6: Final answer
    x = 325,831,242.60

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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.