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Finding the Fourth Proportional to 58,431.67, 80,635.68 and 31,574.17

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Solution

The fourth proportional to 58,431.67, 80,635.68 and 31,574.17 is: 43,572.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,431.67 : 80,635.68 = 31,574.17 : x
  2. Step 2: Convert to fraction form
    58,431.67/80,635.68 = 31,574.17/x
  3. Step 3: Cross multiply
    58,431.67x = 80,635.68 × 31,574.17
  4. Step 4: Simplify right side
    58,431.67x = 2,546,004,850.47
  5. Step 5: Solve for x
    x = 2,546,004,850.47/58,431.67
  6. Step 6: Final answer
    x = 43,572.34

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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.