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Finding the Fourth Proportional to 74,746.67, 112,149.86 and 30,376.89

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Solution

The fourth proportional to 74,746.67, 112,149.86 and 30,376.89 is: 45,577.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,746.67 : 112,149.86 = 30,376.89 : x
  2. Step 2: Convert to fraction form
    74,746.67/112,149.86 = 30,376.89/x
  3. Step 3: Cross multiply
    74,746.67x = 112,149.86 × 30,376.89
  4. Step 4: Simplify right side
    74,746.67x = 3,406,763,808.85
  5. Step 5: Solve for x
    x = 3,406,763,808.85/74,746.67
  6. Step 6: Final answer
    x = 45,577.47

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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.