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Finding the Fourth Proportional to 703,693.61, 971,187.11 and 393,613.43

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Solution

The fourth proportional to 703,693.61, 971,187.11 and 393,613.43 is: 543,236.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,693.61 : 971,187.11 = 393,613.43 : x
  2. Step 2: Convert to fraction form
    703,693.61/971,187.11 = 393,613.43/x
  3. Step 3: Cross multiply
    703,693.61x = 971,187.11 × 393,613.43
  4. Step 4: Simplify right side
    703,693.61x = 382,272,284,190.94
  5. Step 5: Solve for x
    x = 382,272,284,190.94/703,693.61
  6. Step 6: Final answer
    x = 543,236.83

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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.