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Finding the Fourth Proportional to 35,508.88, 48,986.76 and 21,353.68

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Solution

The fourth proportional to 35,508.88, 48,986.76 and 21,353.68 is: 29,458.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,508.88 : 48,986.76 = 21,353.68 : x
  2. Step 2: Convert to fraction form
    35,508.88/48,986.76 = 21,353.68/x
  3. Step 3: Cross multiply
    35,508.88x = 48,986.76 × 21,353.68
  4. Step 4: Simplify right side
    35,508.88x = 1,046,047,597.28
  5. Step 5: Solve for x
    x = 1,046,047,597.28/35,508.88
  6. Step 6: Final answer
    x = 29,458.76

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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.