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Finding the Fourth Proportional to 55,950.30, 77,213.02 and 30,458.31

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Solution

The fourth proportional to 55,950.30, 77,213.02 and 30,458.31 is: 42,033.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,950.30 : 77,213.02 = 30,458.31 : x
  2. Step 2: Convert to fraction form
    55,950.30/77,213.02 = 30,458.31/x
  3. Step 3: Cross multiply
    55,950.30x = 77,213.02 × 30,458.31
  4. Step 4: Simplify right side
    55,950.30x = 2,351,778,099.20
  5. Step 5: Solve for x
    x = 2,351,778,099.20/55,950.30
  6. Step 6: Final answer
    x = 42,033.34

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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.