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Finding the Fourth Proportional to 358,855.20, 538,366.18 and 122,199.93

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Solution

The fourth proportional to 358,855.20, 538,366.18 and 122,199.93 is: 183,328.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,855.20 : 538,366.18 = 122,199.93 : x
  2. Step 2: Convert to fraction form
    358,855.20/538,366.18 = 122,199.93/x
  3. Step 3: Cross multiply
    358,855.20x = 538,366.18 × 122,199.93
  4. Step 4: Simplify right side
    358,855.20x = 65,788,309,510.37
  5. Step 5: Solve for x
    x = 65,788,309,510.37/358,855.20
  6. Step 6: Final answer
    x = 183,328.29

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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.