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Finding the Fourth Proportional to 248,528.16, 342,948.56 and 139,626.56

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Solution

The fourth proportional to 248,528.16, 342,948.56 and 139,626.56 is: 192,673.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,528.16 : 342,948.56 = 139,626.56 : x
  2. Step 2: Convert to fraction form
    248,528.16/342,948.56 = 139,626.56/x
  3. Step 3: Cross multiply
    248,528.16x = 342,948.56 × 139,626.56
  4. Step 4: Simplify right side
    248,528.16x = 47,884,727,848.99
  5. Step 5: Solve for x
    x = 47,884,727,848.99/248,528.16
  6. Step 6: Final answer
    x = 192,673.25

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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.