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Finding the Fourth Proportional to 252,186.75, 348,017.72 and 139,011.93

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Solution

The fourth proportional to 252,186.75, 348,017.72 and 139,011.93 is: 191,836.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,186.75 : 348,017.72 = 139,011.93 : x
  2. Step 2: Convert to fraction form
    252,186.75/348,017.72 = 139,011.93/x
  3. Step 3: Cross multiply
    252,186.75x = 348,017.72 × 139,011.93
  4. Step 4: Simplify right side
    252,186.75x = 48,378,614,236.34
  5. Step 5: Solve for x
    x = 48,378,614,236.34/252,186.75
  6. Step 6: Final answer
    x = 191,836.46

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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.