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Finding the Fourth Proportional to 75,119.80, 103,665.32 and 41,585.80

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Solution

The fourth proportional to 75,119.80, 103,665.32 and 41,585.80 is: 57,388.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,119.80 : 103,665.32 = 41,585.80 : x
  2. Step 2: Convert to fraction form
    75,119.80/103,665.32 = 41,585.80/x
  3. Step 3: Cross multiply
    75,119.80x = 103,665.32 × 41,585.80
  4. Step 4: Simplify right side
    75,119.80x = 4,311,005,264.46
  5. Step 5: Solve for x
    x = 4,311,005,264.46/75,119.80
  6. Step 6: Final answer
    x = 57,388.40

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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.