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Finding the Fourth Proportional to 49,239.72, 73,859.64 and 12,303.72

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Solution

The fourth proportional to 49,239.72, 73,859.64 and 12,303.72 is: 18,455.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,239.72 : 73,859.64 = 12,303.72 : x
  2. Step 2: Convert to fraction form
    49,239.72/73,859.64 = 12,303.72/x
  3. Step 3: Cross multiply
    49,239.72x = 73,859.64 × 12,303.72
  4. Step 4: Simplify right side
    49,239.72x = 908,748,329.86
  5. Step 5: Solve for x
    x = 908,748,329.86/49,239.72
  6. Step 6: Final answer
    x = 18,455.59

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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.