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Finding the Fourth Proportional to 37,374.80, 56,062.20 and 18,712.40

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Solution

The fourth proportional to 37,374.80, 56,062.20 and 18,712.40 is: 28,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,374.80 : 56,062.20 = 18,712.40 : x
  2. Step 2: Convert to fraction form
    37,374.80/56,062.20 = 18,712.40/x
  3. Step 3: Cross multiply
    37,374.80x = 56,062.20 × 18,712.40
  4. Step 4: Simplify right side
    37,374.80x = 1,049,058,311.28
  5. Step 5: Solve for x
    x = 1,049,058,311.28/37,374.80
  6. Step 6: Final answer
    x = 28,068.60

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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.