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Finding the Fourth Proportional to 35,662.79, 53,494.80 and 13,486.61

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Solution

The fourth proportional to 35,662.79, 53,494.80 and 13,486.61 is: 20,230.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,662.79 : 53,494.80 = 13,486.61 : x
  2. Step 2: Convert to fraction form
    35,662.79/53,494.80 = 13,486.61/x
  3. Step 3: Cross multiply
    35,662.79x = 53,494.80 × 13,486.61
  4. Step 4: Simplify right side
    35,662.79x = 721,463,587.79
  5. Step 5: Solve for x
    x = 721,463,587.79/35,662.79
  6. Step 6: Final answer
    x = 20,230.15

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1.5x scale

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.