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Finding the Fourth Proportional to 64,911.60, 97,360.20 and 53,204.40

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Solution

The fourth proportional to 64,911.60, 97,360.20 and 53,204.40 is: 79,800.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,911.60 : 97,360.20 = 53,204.40 : x
  2. Step 2: Convert to fraction form
    64,911.60/97,360.20 = 53,204.40/x
  3. Step 3: Cross multiply
    64,911.60x = 97,360.20 × 53,204.40
  4. Step 4: Simplify right side
    64,911.60x = 5,179,991,024.88
  5. Step 5: Solve for x
    x = 5,179,991,024.88/64,911.60
  6. Step 6: Final answer
    x = 79,800.70

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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.