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Finding the Fourth Proportional to 77,475.68, 106,911.96 and 43,480.92

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Solution

The fourth proportional to 77,475.68, 106,911.96 and 43,480.92 is: 60,001.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,475.68 : 106,911.96 = 43,480.92 : x
  2. Step 2: Convert to fraction form
    77,475.68/106,911.96 = 43,480.92/x
  3. Step 3: Cross multiply
    77,475.68x = 106,911.96 × 43,480.92
  4. Step 4: Simplify right side
    77,475.68x = 4,648,630,379.80
  5. Step 5: Solve for x
    x = 4,648,630,379.80/77,475.68
  6. Step 6: Final answer
    x = 60,001.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.