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Finding the Fourth Proportional to 56,480.82, 77,943.56 and 31,330.32

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Solution

The fourth proportional to 56,480.82, 77,943.56 and 31,330.32 is: 43,235.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,480.82 : 77,943.56 = 31,330.32 : x
  2. Step 2: Convert to fraction form
    56,480.82/77,943.56 = 31,330.32/x
  3. Step 3: Cross multiply
    56,480.82x = 77,943.56 × 31,330.32
  4. Step 4: Simplify right side
    56,480.82x = 2,441,996,676.74
  5. Step 5: Solve for x
    x = 2,441,996,676.74/56,480.82
  6. Step 6: Final answer
    x = 43,235.86

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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.