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Finding the Fourth Proportional to 252,240.78, 348,076.53 and 139,063.53

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Solution

The fourth proportional to 252,240.78, 348,076.53 and 139,063.53 is: 191,898.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,240.78 : 348,076.53 = 139,063.53 : x
  2. Step 2: Convert to fraction form
    252,240.78/348,076.53 = 139,063.53/x
  3. Step 3: Cross multiply
    252,240.78x = 348,076.53 × 139,063.53
  4. Step 4: Simplify right side
    252,240.78x = 48,404,750,971.95
  5. Step 5: Solve for x
    x = 48,404,750,971.95/252,240.78
  6. Step 6: Final answer
    x = 191,898.99

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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.