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Finding the Fourth Proportional to 243,818.70, 365,436.45 and 125,429.10

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Solution

The fourth proportional to 243,818.70, 365,436.45 and 125,429.10 is: 187,993.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,818.70 : 365,436.45 = 125,429.10 : x
  2. Step 2: Convert to fraction form
    243,818.70/365,436.45 = 125,429.10/x
  3. Step 3: Cross multiply
    243,818.70x = 365,436.45 × 125,429.10
  4. Step 4: Simplify right side
    243,818.70x = 45,836,365,030.70
  5. Step 5: Solve for x
    x = 45,836,365,030.70/243,818.70
  6. Step 6: Final answer
    x = 187,993.64

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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.