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Finding the Fourth Proportional to 252,626.40, 348,621.72 and 139,446.72

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Solution

The fourth proportional to 252,626.40, 348,621.72 and 139,446.72 is: 192,434.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,626.40 : 348,621.72 = 139,446.72 : x
  2. Step 2: Convert to fraction form
    252,626.40/348,621.72 = 139,446.72/x
  3. Step 3: Cross multiply
    252,626.40x = 348,621.72 × 139,446.72
  4. Step 4: Simplify right side
    252,626.40x = 48,614,155,374.76
  5. Step 5: Solve for x
    x = 48,614,155,374.76/252,626.40
  6. Step 6: Final answer
    x = 192,434.98

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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.