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Finding the Fourth Proportional to 78,982,064.40, 118,260,520.20 and 78,982,064.40

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Solution

The fourth proportional to 78,982,064.40, 118,260,520.20 and 78,982,064.40 is: 118,260,520.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,982,064.40 : 118,260,520.20 = 78,982,064.40 : x
  2. Step 2: Convert to fraction form
    78,982,064.40/118,260,520.20 = 78,982,064.40/x
  3. Step 3: Cross multiply
    78,982,064.40x = 118,260,520.20 × 78,982,064.40
  4. Step 4: Simplify right side
    78,982,064.40x = 9,340,460,022,413,902
  5. Step 5: Solve for x
    x = 9,340,460,022,413,902/78,982,064.40
  6. Step 6: Final answer
    x = 118,260,520.20

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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.