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Finding the Fourth Proportional to 30,674.74, 42,330.93 and 17,426.74

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Solution

The fourth proportional to 30,674.74, 42,330.93 and 17,426.74 is: 24,048.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,674.74 : 42,330.93 = 17,426.74 : x
  2. Step 2: Convert to fraction form
    30,674.74/42,330.93 = 17,426.74/x
  3. Step 3: Cross multiply
    30,674.74x = 42,330.93 × 17,426.74
  4. Step 4: Simplify right side
    30,674.74x = 737,690,111.07
  5. Step 5: Solve for x
    x = 737,690,111.07/30,674.74
  6. Step 6: Final answer
    x = 24,048.78

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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.