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Finding the Fourth Proportional to 536,749.30, 805,123.43 and 137,389.43

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Solution

The fourth proportional to 536,749.30, 805,123.43 and 137,389.43 is: 206,084.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,749.30 : 805,123.43 = 137,389.43 : x
  2. Step 2: Convert to fraction form
    536,749.30/805,123.43 = 137,389.43/x
  3. Step 3: Cross multiply
    536,749.30x = 805,123.43 × 137,389.43
  4. Step 4: Simplify right side
    536,749.30x = 110,615,449,127.35
  5. Step 5: Solve for x
    x = 110,615,449,127.35/536,749.30
  6. Step 6: Final answer
    x = 206,084.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.