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Finding the Fourth Proportional to 54,656.63, 75,426.31 and 31,690.90

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Solution

The fourth proportional to 54,656.63, 75,426.31 and 31,690.90 is: 43,733.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,656.63 : 75,426.31 = 31,690.90 : x
  2. Step 2: Convert to fraction form
    54,656.63/75,426.31 = 31,690.90/x
  3. Step 3: Cross multiply
    54,656.63x = 75,426.31 × 31,690.90
  4. Step 4: Simplify right side
    54,656.63x = 2,390,327,603.21
  5. Step 5: Solve for x
    x = 2,390,327,603.21/54,656.63
  6. Step 6: Final answer
    x = 43,733.54

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1.5x scale

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.