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Finding the Fourth Proportional to 48,873.40, 73,455.90 and 42,458.20

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Solution

The fourth proportional to 48,873.40, 73,455.90 and 42,458.20 is: 63,813.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,873.40 : 73,455.90 = 42,458.20 : x
  2. Step 2: Convert to fraction form
    48,873.40/73,455.90 = 42,458.20/x
  3. Step 3: Cross multiply
    48,873.40x = 73,455.90 × 42,458.20
  4. Step 4: Simplify right side
    48,873.40x = 3,118,805,293.38
  5. Step 5: Solve for x
    x = 3,118,805,293.38/48,873.40
  6. Step 6: Final answer
    x = 63,813.96

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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.