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Finding the Fourth Proportional to 60,785.87, 83,784.08 and 40,635.39

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Solution

The fourth proportional to 60,785.87, 83,784.08 and 40,635.39 is: 56,009.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,785.87 : 83,784.08 = 40,635.39 : x
  2. Step 2: Convert to fraction form
    60,785.87/83,784.08 = 40,635.39/x
  3. Step 3: Cross multiply
    60,785.87x = 83,784.08 × 40,635.39
  4. Step 4: Simplify right side
    60,785.87x = 3,404,599,182.37
  5. Step 5: Solve for x
    x = 3,404,599,182.37/60,785.87
  6. Step 6: Final answer
    x = 56,009.72

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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.