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Finding the Fourth Proportional to 35,977.72, 53,969.74 and 9,681.88

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Solution

The fourth proportional to 35,977.72, 53,969.74 and 9,681.88 is: 14,523.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,977.72 : 53,969.74 = 9,681.88 : x
  2. Step 2: Convert to fraction form
    35,977.72/53,969.74 = 9,681.88/x
  3. Step 3: Cross multiply
    35,977.72x = 53,969.74 × 9,681.88
  4. Step 4: Simplify right side
    35,977.72x = 522,528,546.31
  5. Step 5: Solve for x
    x = 522,528,546.31/35,977.72
  6. Step 6: Final answer
    x = 14,523.67

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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.