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Finding the Fourth Proportional to 56,185.92, 77,539.68 and 31,034.88

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Solution

The fourth proportional to 56,185.92, 77,539.68 and 31,034.88 is: 42,829.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,185.92 : 77,539.68 = 31,034.88 : x
  2. Step 2: Convert to fraction form
    56,185.92/77,539.68 = 31,034.88/x
  3. Step 3: Cross multiply
    56,185.92x = 77,539.68 × 31,034.88
  4. Step 4: Simplify right side
    56,185.92x = 2,406,434,664.04
  5. Step 5: Solve for x
    x = 2,406,434,664.04/56,185.92
  6. Step 6: Final answer
    x = 42,829.85

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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.