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Finding the Fourth Proportional to 64,697.64, 97,486.34 and 53,847.07

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Solution

The fourth proportional to 64,697.64, 97,486.34 and 53,847.07 is: 81,136.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,697.64 : 97,486.34 = 53,847.07 : x
  2. Step 2: Convert to fraction form
    64,697.64/97,486.34 = 53,847.07/x
  3. Step 3: Cross multiply
    64,697.64x = 97,486.34 × 53,847.07
  4. Step 4: Simplify right side
    64,697.64x = 5,249,353,774.02
  5. Step 5: Solve for x
    x = 5,249,353,774.02/64,697.64
  6. Step 6: Final answer
    x = 81,136.71

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.