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Finding the Fourth Proportional to 97,474.84, 134,521.50 and 55,017.88

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Solution

The fourth proportional to 97,474.84, 134,521.50 and 55,017.88 is: 75,928.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,474.84 : 134,521.50 = 55,017.88 : x
  2. Step 2: Convert to fraction form
    97,474.84/134,521.50 = 55,017.88/x
  3. Step 3: Cross multiply
    97,474.84x = 134,521.50 × 55,017.88
  4. Step 4: Simplify right side
    97,474.84x = 7,401,087,744.42
  5. Step 5: Solve for x
    x = 7,401,087,744.42/97,474.84
  6. Step 6: Final answer
    x = 75,928.19

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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.