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Finding the Fourth Proportional to 293,671, 405,231.60 and 172,785.70

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Solution

The fourth proportional to 293,671, 405,231.60 and 172,785.70 is: 238,424.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,671 : 405,231.60 = 172,785.70 : x
  2. Step 2: Convert to fraction form
    293,671/405,231.60 = 172,785.70/x
  3. Step 3: Cross multiply
    293,671x = 405,231.60 × 172,785.70
  4. Step 4: Simplify right side
    293,671x = 70,018,225,668.12
  5. Step 5: Solve for x
    x = 70,018,225,668.12/293,671
  6. Step 6: Final answer
    x = 238,424.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.