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Finding the Fourth Proportional to 54,291.60, 81,656.10 and 48,605.40

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Solution

The fourth proportional to 54,291.60, 81,656.10 and 48,605.40 is: 73,103.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,291.60 : 81,656.10 = 48,605.40 : x
  2. Step 2: Convert to fraction form
    54,291.60/81,656.10 = 48,605.40/x
  3. Step 3: Cross multiply
    54,291.60x = 81,656.10 × 48,605.40
  4. Step 4: Simplify right side
    54,291.60x = 3,968,927,402.94
  5. Step 5: Solve for x
    x = 3,968,927,402.94/54,291.60
  6. Step 6: Final answer
    x = 73,103.89

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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.