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Finding the Fourth Proportional to 92,701.80, 139,052.70 and 55,304.10

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Solution

The fourth proportional to 92,701.80, 139,052.70 and 55,304.10 is: 82,956.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,701.80 : 139,052.70 = 55,304.10 : x
  2. Step 2: Convert to fraction form
    92,701.80/139,052.70 = 55,304.10/x
  3. Step 3: Cross multiply
    92,701.80x = 139,052.70 × 55,304.10
  4. Step 4: Simplify right side
    92,701.80x = 7,690,184,426.07
  5. Step 5: Solve for x
    x = 7,690,184,426.07/92,701.80
  6. Step 6: Final answer
    x = 82,956.15

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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.