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Finding the Fourth Proportional to 30,372.66, 45,560.88 and 9,313.38

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Solution

The fourth proportional to 30,372.66, 45,560.88 and 9,313.38 is: 13,970.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,372.66 : 45,560.88 = 9,313.38 : x
  2. Step 2: Convert to fraction form
    30,372.66/45,560.88 = 9,313.38/x
  3. Step 3: Cross multiply
    30,372.66x = 45,560.88 × 9,313.38
  4. Step 4: Simplify right side
    30,372.66x = 424,325,788.57
  5. Step 5: Solve for x
    x = 424,325,788.57/30,372.66
  6. Step 6: Final answer
    x = 13,970.65

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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.