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Finding the Fourth Proportional to 77,963,607.60, 116,945,411.40 and 53,777,137.20

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Solution

The fourth proportional to 77,963,607.60, 116,945,411.40 and 53,777,137.20 is: 80,665,705.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,963,607.60 : 116,945,411.40 = 53,777,137.20 : x
  2. Step 2: Convert to fraction form
    77,963,607.60/116,945,411.40 = 53,777,137.20/x
  3. Step 3: Cross multiply
    77,963,607.60x = 116,945,411.40 × 53,777,137.20
  4. Step 4: Simplify right side
    77,963,607.60x = 6,288,989,433,768,245
  5. Step 5: Solve for x
    x = 6,288,989,433,768,245/77,963,607.60
  6. Step 6: Final answer
    x = 80,665,705.80

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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.