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Finding the Fourth Proportional to 103,439.84, 155,049.50 and 58,970.84

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Solution

The fourth proportional to 103,439.84, 155,049.50 and 58,970.84 is: 88,393.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,439.84 : 155,049.50 = 58,970.84 : x
  2. Step 2: Convert to fraction form
    103,439.84/155,049.50 = 58,970.84/x
  3. Step 3: Cross multiply
    103,439.84x = 155,049.50 × 58,970.84
  4. Step 4: Simplify right side
    103,439.84x = 9,143,399,791.63
  5. Step 5: Solve for x
    x = 9,143,399,791.63/103,439.84
  6. Step 6: Final answer
    x = 88,393.40

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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.