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Finding the Fourth Proportional to 64,968.99, 97,453.48 and 15,720.99

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Solution

The fourth proportional to 64,968.99, 97,453.48 and 15,720.99 is: 23,581.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,968.99 : 97,453.48 = 15,720.99 : x
  2. Step 2: Convert to fraction form
    64,968.99/97,453.48 = 15,720.99/x
  3. Step 3: Cross multiply
    64,968.99x = 97,453.48 × 15,720.99
  4. Step 4: Simplify right side
    64,968.99x = 1,532,065,184.55
  5. Step 5: Solve for x
    x = 1,532,065,184.55/64,968.99
  6. Step 6: Final answer
    x = 23,581.48

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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.