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Finding the Fourth Proportional to 57,403.59, 86,113.16 and 19,958.82

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Solution

The fourth proportional to 57,403.59, 86,113.16 and 19,958.82 is: 29,940.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,403.59 : 86,113.16 = 19,958.82 : x
  2. Step 2: Convert to fraction form
    57,403.59/86,113.16 = 19,958.82/x
  3. Step 3: Cross multiply
    57,403.59x = 86,113.16 × 19,958.82
  4. Step 4: Simplify right side
    57,403.59x = 1,718,716,960.28
  5. Step 5: Solve for x
    x = 1,718,716,960.28/57,403.59
  6. Step 6: Final answer
    x = 29,940.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.