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Finding the Fourth Proportional to 124,505.70, 186,946.65 and 99,471.42

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Solution

The fourth proportional to 124,505.70, 186,946.65 and 99,471.42 is: 149,357.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,505.70 : 186,946.65 = 99,471.42 : x
  2. Step 2: Convert to fraction form
    124,505.70/186,946.65 = 99,471.42/x
  3. Step 3: Cross multiply
    124,505.70x = 186,946.65 × 99,471.42
  4. Step 4: Simplify right side
    124,505.70x = 18,595,848,739.74
  5. Step 5: Solve for x
    x = 18,595,848,739.74/124,505.70
  6. Step 6: Final answer
    x = 149,357.41

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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.