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Finding the Fourth Proportional to 58,579.61, 80,820.03 and 38,434.61

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Solution

The fourth proportional to 58,579.61, 80,820.03 and 38,434.61 is: 53,026.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,579.61 : 80,820.03 = 38,434.61 : x
  2. Step 2: Convert to fraction form
    58,579.61/80,820.03 = 38,434.61/x
  3. Step 3: Cross multiply
    58,579.61x = 80,820.03 × 38,434.61
  4. Step 4: Simplify right side
    58,579.61x = 3,106,286,391.16
  5. Step 5: Solve for x
    x = 3,106,286,391.16/58,579.61
  6. Step 6: Final answer
    x = 53,026.75

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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.