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Finding the Fourth Proportional to 58,577.98, 80,837.47 and 31,720.49

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Solution

The fourth proportional to 58,577.98, 80,837.47 and 31,720.49 is: 43,774.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,577.98 : 80,837.47 = 31,720.49 : x
  2. Step 2: Convert to fraction form
    58,577.98/80,837.47 = 31,720.49/x
  3. Step 3: Cross multiply
    58,577.98x = 80,837.47 × 31,720.49
  4. Step 4: Simplify right side
    58,577.98x = 2,564,204,158.76
  5. Step 5: Solve for x
    x = 2,564,204,158.76/58,577.98
  6. Step 6: Final answer
    x = 43,774.20

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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.