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Finding the Fourth Proportional to 122,972.70, 184,426.65 and 38,732.70

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Solution

The fourth proportional to 122,972.70, 184,426.65 and 38,732.70 is: 58,088.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,972.70 : 184,426.65 = 38,732.70 : x
  2. Step 2: Convert to fraction form
    122,972.70/184,426.65 = 38,732.70/x
  3. Step 3: Cross multiply
    122,972.70x = 184,426.65 × 38,732.70
  4. Step 4: Simplify right side
    122,972.70x = 7,143,342,106.46
  5. Step 5: Solve for x
    x = 7,143,342,106.46/122,972.70
  6. Step 6: Final answer
    x = 58,088.84

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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.