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Finding the Fourth Proportional to 252,187, 348,018.06 and 139,012.18

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Solution

The fourth proportional to 252,187, 348,018.06 and 139,012.18 is: 191,836.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,187 : 348,018.06 = 139,012.18 : x
  2. Step 2: Convert to fraction form
    252,187/348,018.06 = 139,012.18/x
  3. Step 3: Cross multiply
    252,187x = 348,018.06 × 139,012.18
  4. Step 4: Simplify right side
    252,187x = 48,378,749,199.97
  5. Step 5: Solve for x
    x = 48,378,749,199.97/252,187
  6. Step 6: Final answer
    x = 191,836.81

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1.5x scale

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.