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Finding the Fourth Proportional to 65,763.42, 98,645.16 and 61,039.50

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Solution

The fourth proportional to 65,763.42, 98,645.16 and 61,039.50 is: 91,559.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,763.42 : 98,645.16 = 61,039.50 : x
  2. Step 2: Convert to fraction form
    65,763.42/98,645.16 = 61,039.50/x
  3. Step 3: Cross multiply
    65,763.42x = 98,645.16 × 61,039.50
  4. Step 4: Simplify right side
    65,763.42x = 6,021,251,243.82
  5. Step 5: Solve for x
    x = 6,021,251,243.82/65,763.42
  6. Step 6: Final answer
    x = 91,559.28

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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.