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Finding the Fourth Proportional to 122,318.70, 183,478.05 and 52,205.10

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Solution

The fourth proportional to 122,318.70, 183,478.05 and 52,205.10 is: 78,307.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,318.70 : 183,478.05 = 52,205.10 : x
  2. Step 2: Convert to fraction form
    122,318.70/183,478.05 = 52,205.10/x
  3. Step 3: Cross multiply
    122,318.70x = 183,478.05 × 52,205.10
  4. Step 4: Simplify right side
    122,318.70x = 9,578,489,948.06
  5. Step 5: Solve for x
    x = 9,578,489,948.06/122,318.70
  6. Step 6: Final answer
    x = 78,307.65

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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.