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Finding the Fourth Proportional to 252,291.69, 348,162.15 and 139,114.71

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Solution

The fourth proportional to 252,291.69, 348,162.15 and 139,114.71 is: 191,978.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,291.69 : 348,162.15 = 139,114.71 : x
  2. Step 2: Convert to fraction form
    252,291.69/348,162.15 = 139,114.71/x
  3. Step 3: Cross multiply
    252,291.69x = 348,162.15 × 139,114.71
  4. Step 4: Simplify right side
    252,291.69x = 48,434,476,530.23
  5. Step 5: Solve for x
    x = 48,434,476,530.23/252,291.69
  6. Step 6: Final answer
    x = 191,978.09

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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.