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Finding the Fourth Proportional to 124,499.70, 186,749.55 and 31,005.45

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Solution

The fourth proportional to 124,499.70, 186,749.55 and 31,005.45 is: 46,508.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,499.70 : 186,749.55 = 31,005.45 : x
  2. Step 2: Convert to fraction form
    124,499.70/186,749.55 = 31,005.45/x
  3. Step 3: Cross multiply
    124,499.70x = 186,749.55 × 31,005.45
  4. Step 4: Simplify right side
    124,499.70x = 5,790,253,835.05
  5. Step 5: Solve for x
    x = 5,790,253,835.05/124,499.70
  6. Step 6: Final answer
    x = 46,508.18

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1.5x scale

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.