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Finding the Fourth Proportional to 72,114,635.70, 108,171,953.55 and 64,934,277.30

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Solution

The fourth proportional to 72,114,635.70, 108,171,953.55 and 64,934,277.30 is: 97,401,415.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,114,635.70 : 108,171,953.55 = 64,934,277.30 : x
  2. Step 2: Convert to fraction form
    72,114,635.70/108,171,953.55 = 64,934,277.30/x
  3. Step 3: Cross multiply
    72,114,635.70x = 108,171,953.55 × 64,934,277.30
  4. Step 4: Simplify right side
    72,114,635.70x = 7,024,067,627,898,419
  5. Step 5: Solve for x
    x = 7,024,067,627,898,419/72,114,635.70
  6. Step 6: Final answer
    x = 97,401,415.95

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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.