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Finding the Fourth Proportional to 73,430.72, 109,968.48 and 69,755.84

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Solution

The fourth proportional to 73,430.72, 109,968.48 and 69,755.84 is: 104,465.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,430.72 : 109,968.48 = 69,755.84 : x
  2. Step 2: Convert to fraction form
    73,430.72/109,968.48 = 69,755.84/x
  3. Step 3: Cross multiply
    73,430.72x = 109,968.48 × 69,755.84
  4. Step 4: Simplify right side
    73,430.72x = 7,670,943,695.92
  5. Step 5: Solve for x
    x = 7,670,943,695.92/73,430.72
  6. Step 6: Final answer
    x = 104,465.05

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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.