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Finding the Fourth Proportional to 48,387.98, 72,513.90 and 38,483.30

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Solution

The fourth proportional to 48,387.98, 72,513.90 and 38,483.30 is: 57,670.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,387.98 : 72,513.90 = 38,483.30 : x
  2. Step 2: Convert to fraction form
    48,387.98/72,513.90 = 38,483.30/x
  3. Step 3: Cross multiply
    48,387.98x = 72,513.90 × 38,483.30
  4. Step 4: Simplify right side
    48,387.98x = 2,790,574,167.87
  5. Step 5: Solve for x
    x = 2,790,574,167.87/48,387.98
  6. Step 6: Final answer
    x = 57,670.81

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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.