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Finding the Fourth Proportional to 97,485.72, 134,512.70 and 56,651.69

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Solution

The fourth proportional to 97,485.72, 134,512.70 and 56,651.69 is: 78,169.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,485.72 : 134,512.70 = 56,651.69 : x
  2. Step 2: Convert to fraction form
    97,485.72/134,512.70 = 56,651.69/x
  3. Step 3: Cross multiply
    97,485.72x = 134,512.70 × 56,651.69
  4. Step 4: Simplify right side
    97,485.72x = 7,620,370,825.64
  5. Step 5: Solve for x
    x = 7,620,370,825.64/97,485.72
  6. Step 6: Final answer
    x = 78,169.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.