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Finding the Fourth Proportional to 74,810.60, 112,086.30 and 48,501.80

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Solution

The fourth proportional to 74,810.60, 112,086.30 and 48,501.80 is: 72,668.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,810.60 : 112,086.30 = 48,501.80 : x
  2. Step 2: Convert to fraction form
    74,810.60/112,086.30 = 48,501.80/x
  3. Step 3: Cross multiply
    74,810.60x = 112,086.30 × 48,501.80
  4. Step 4: Simplify right side
    74,810.60x = 5,436,387,305.34
  5. Step 5: Solve for x
    x = 5,436,387,305.34/74,810.60
  6. Step 6: Final answer
    x = 72,668.68

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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.