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Finding the Fourth Proportional to 45,920.80, 68,873.64 and 42,932.08

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Solution

The fourth proportional to 45,920.80, 68,873.64 and 42,932.08 is: 64,391.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,920.80 : 68,873.64 = 42,932.08 : x
  2. Step 2: Convert to fraction form
    45,920.80/68,873.64 = 42,932.08/x
  3. Step 3: Cross multiply
    45,920.80x = 68,873.64 × 42,932.08
  4. Step 4: Simplify right side
    45,920.80x = 2,956,888,622.37
  5. Step 5: Solve for x
    x = 2,956,888,622.37/45,920.80
  6. Step 6: Final answer
    x = 64,391.05

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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.