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Finding the Fourth Proportional to 75,259.64, 103,928.38 and 48,448.60

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Solution

The fourth proportional to 75,259.64, 103,928.38 and 48,448.60 is: 66,904.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,259.64 : 103,928.38 = 48,448.60 : x
  2. Step 2: Convert to fraction form
    75,259.64/103,928.38 = 48,448.60/x
  3. Step 3: Cross multiply
    75,259.64x = 103,928.38 × 48,448.60
  4. Step 4: Simplify right side
    75,259.64x = 5,035,184,511.27
  5. Step 5: Solve for x
    x = 5,035,184,511.27/75,259.64
  6. Step 6: Final answer
    x = 66,904.18

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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.