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Finding the Fourth Proportional to 75,117.80, 103,662.56 and 41,583.80

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Solution

The fourth proportional to 75,117.80, 103,662.56 and 41,583.80 is: 57,385.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,117.80 : 103,662.56 = 41,583.80 : x
  2. Step 2: Convert to fraction form
    75,117.80/103,662.56 = 41,583.80/x
  3. Step 3: Cross multiply
    75,117.80x = 103,662.56 × 41,583.80
  4. Step 4: Simplify right side
    75,117.80x = 4,310,683,162.53
  5. Step 5: Solve for x
    x = 4,310,683,162.53/75,117.80
  6. Step 6: Final answer
    x = 57,385.64

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1.5x scale

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.