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Finding the Fourth Proportional to 48,348.90, 66,720.51 and 27,135

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Solution

The fourth proportional to 48,348.90, 66,720.51 and 27,135 is: 37,445.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,348.90 : 66,720.51 = 27,135 : x
  2. Step 2: Convert to fraction form
    48,348.90/66,720.51 = 27,135/x
  3. Step 3: Cross multiply
    48,348.90x = 66,720.51 × 27,135
  4. Step 4: Simplify right side
    48,348.90x = 1,810,461,038.85
  5. Step 5: Solve for x
    x = 1,810,461,038.85/48,348.90
  6. Step 6: Final answer
    x = 37,445.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.