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Finding the Fourth Proportional to 80,875,963.20, 113,427,902.40 and 80,875,963.20

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Solution

The fourth proportional to 80,875,963.20, 113,427,902.40 and 80,875,963.20 is: 113,427,902.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,875,963.20 : 113,427,902.40 = 80,875,963.20 : x
  2. Step 2: Convert to fraction form
    80,875,963.20/113,427,902.40 = 80,875,963.20/x
  3. Step 3: Cross multiply
    80,875,963.20x = 113,427,902.40 × 80,875,963.20
  4. Step 4: Simplify right side
    80,875,963.20x = 9,173,590,860,355,592
  5. Step 5: Solve for x
    x = 9,173,590,860,355,592/80,875,963.20
  6. Step 6: Final answer
    x = 113,427,902.40

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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.