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Finding the Fourth Proportional to 358,766.70, 538,150.05 and 122,117.10

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Solution

The fourth proportional to 358,766.70, 538,150.05 and 122,117.10 is: 183,175.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,766.70 : 538,150.05 = 122,117.10 : x
  2. Step 2: Convert to fraction form
    358,766.70/538,150.05 = 122,117.10/x
  3. Step 3: Cross multiply
    358,766.70x = 538,150.05 × 122,117.10
  4. Step 4: Simplify right side
    358,766.70x = 65,717,323,470.86
  5. Step 5: Solve for x
    x = 65,717,323,470.86/358,766.70
  6. Step 6: Final answer
    x = 183,175.65

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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.