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Finding the Fourth Proportional to 48,247.40, 72,360.30 and 31,723.40

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Solution

The fourth proportional to 48,247.40, 72,360.30 and 31,723.40 is: 47,578.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,247.40 : 72,360.30 = 31,723.40 : x
  2. Step 2: Convert to fraction form
    48,247.40/72,360.30 = 31,723.40/x
  3. Step 3: Cross multiply
    48,247.40x = 72,360.30 × 31,723.40
  4. Step 4: Simplify right side
    48,247.40x = 2,295,514,741.02
  5. Step 5: Solve for x
    x = 2,295,514,741.02/48,247.40
  6. Step 6: Final answer
    x = 47,578.00

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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.