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Finding the Fourth Proportional to 58,491.94, 80,718.64 and 31,634.48

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Solution

The fourth proportional to 58,491.94, 80,718.64 and 31,634.48 is: 43,655.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,491.94 : 80,718.64 = 31,634.48 : x
  2. Step 2: Convert to fraction form
    58,491.94/80,718.64 = 31,634.48/x
  3. Step 3: Cross multiply
    58,491.94x = 80,718.64 × 31,634.48
  4. Step 4: Simplify right side
    58,491.94x = 2,553,492,202.71
  5. Step 5: Solve for x
    x = 2,553,492,202.71/58,491.94
  6. Step 6: Final answer
    x = 43,655.45

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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.