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Finding the Fourth Proportional to 75,360.32, 103,990.71 and 41,368.68

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Solution

The fourth proportional to 75,360.32, 103,990.71 and 41,368.68 is: 57,085.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,360.32 : 103,990.71 = 41,368.68 : x
  2. Step 2: Convert to fraction form
    75,360.32/103,990.71 = 41,368.68/x
  3. Step 3: Cross multiply
    75,360.32x = 103,990.71 × 41,368.68
  4. Step 4: Simplify right side
    75,360.32x = 4,301,958,404.96
  5. Step 5: Solve for x
    x = 4,301,958,404.96/75,360.32
  6. Step 6: Final answer
    x = 57,085.20

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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.