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Finding the Fourth Proportional to 55,950.75, 77,212.04 and 30,800.25

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Solution

The fourth proportional to 55,950.75, 77,212.04 and 30,800.25 is: 42,504.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,950.75 : 77,212.04 = 30,800.25 : x
  2. Step 2: Convert to fraction form
    55,950.75/77,212.04 = 30,800.25/x
  3. Step 3: Cross multiply
    55,950.75x = 77,212.04 × 30,800.25
  4. Step 4: Simplify right side
    55,950.75x = 2,378,149,981.01
  5. Step 5: Solve for x
    x = 2,378,149,981.01/55,950.75
  6. Step 6: Final answer
    x = 42,504.35

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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.