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Finding the Fourth Proportional to 35,990.73, 53,968.46 and 12,613.77

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Solution

The fourth proportional to 35,990.73, 53,968.46 and 12,613.77 is: 18,914.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,990.73 : 53,968.46 = 12,613.77 : x
  2. Step 2: Convert to fraction form
    35,990.73/53,968.46 = 12,613.77/x
  3. Step 3: Cross multiply
    35,990.73x = 53,968.46 × 12,613.77
  4. Step 4: Simplify right side
    35,990.73x = 680,745,678.63
  5. Step 5: Solve for x
    x = 680,745,678.63/35,990.73
  6. Step 6: Final answer
    x = 18,914.47

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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.