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Finding the Fourth Proportional to 74,989.96, 112,482.60 and 30,617.14

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Solution

The fourth proportional to 74,989.96, 112,482.60 and 30,617.14 is: 45,924.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,989.96 : 112,482.60 = 30,617.14 : x
  2. Step 2: Convert to fraction form
    74,989.96/112,482.60 = 30,617.14/x
  3. Step 3: Cross multiply
    74,989.96x = 112,482.60 × 30,617.14
  4. Step 4: Simplify right side
    74,989.96x = 3,443,895,511.76
  5. Step 5: Solve for x
    x = 3,443,895,511.76/74,989.96
  6. Step 6: Final answer
    x = 45,924.75

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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.