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Finding the Fourth Proportional to 74,930.31, 112,298.59 and 56,062.31

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Solution

The fourth proportional to 74,930.31, 112,298.59 and 56,062.31 is: 84,020.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,930.31 : 112,298.59 = 56,062.31 : x
  2. Step 2: Convert to fraction form
    74,930.31/112,298.59 = 56,062.31/x
  3. Step 3: Cross multiply
    74,930.31x = 112,298.59 × 56,062.31
  4. Step 4: Simplify right side
    74,930.31x = 6,295,718,365.14
  5. Step 5: Solve for x
    x = 6,295,718,365.14/74,930.31
  6. Step 6: Final answer
    x = 84,020.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.