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Finding the Fourth Proportional to 74,998.71, 112,495.71 and 30,625.89

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Solution

The fourth proportional to 74,998.71, 112,495.71 and 30,625.89 is: 45,937.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,998.71 : 112,495.71 = 30,625.89 : x
  2. Step 2: Convert to fraction form
    74,998.71/112,495.71 = 30,625.89/x
  3. Step 3: Cross multiply
    74,998.71x = 112,495.71 × 30,625.89
  4. Step 4: Simplify right side
    74,998.71x = 3,445,281,239.93
  5. Step 5: Solve for x
    x = 3,445,281,239.93/74,998.71
  6. Step 6: Final answer
    x = 45,937.87

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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.