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Finding the Fourth Proportional to 61,869.03, 85,378.32 and 35,016.81

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Solution

The fourth proportional to 61,869.03, 85,378.32 and 35,016.81 is: 48,322.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,869.03 : 85,378.32 = 35,016.81 : x
  2. Step 2: Convert to fraction form
    61,869.03/85,378.32 = 35,016.81/x
  3. Step 3: Cross multiply
    61,869.03x = 85,378.32 × 35,016.81
  4. Step 4: Simplify right side
    61,869.03x = 2,989,676,409.56
  5. Step 5: Solve for x
    x = 2,989,676,409.56/61,869.03
  6. Step 6: Final answer
    x = 48,322.66

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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.