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Finding the Fourth Proportional to 48,403.40, 72,615.90 and 37,905.80

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Solution

The fourth proportional to 48,403.40, 72,615.90 and 37,905.80 is: 56,867.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,403.40 : 72,615.90 = 37,905.80 : x
  2. Step 2: Convert to fraction form
    48,403.40/72,615.90 = 37,905.80/x
  3. Step 3: Cross multiply
    48,403.40x = 72,615.90 × 37,905.80
  4. Step 4: Simplify right side
    48,403.40x = 2,752,563,782.22
  5. Step 5: Solve for x
    x = 2,752,563,782.22/48,403.40
  6. Step 6: Final answer
    x = 56,867.16

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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.