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Finding the Fourth Proportional to 70,631.76, 97,481.16 and 45,554.16

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Solution

The fourth proportional to 70,631.76, 97,481.16 and 45,554.16 is: 62,870.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,631.76 : 97,481.16 = 45,554.16 : x
  2. Step 2: Convert to fraction form
    70,631.76/97,481.16 = 45,554.16/x
  3. Step 3: Cross multiply
    70,631.76x = 97,481.16 × 45,554.16
  4. Step 4: Simplify right side
    70,631.76x = 4,440,672,359.63
  5. Step 5: Solve for x
    x = 4,440,672,359.63/70,631.76
  6. Step 6: Final answer
    x = 62,870.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.