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Finding the Fourth Proportional to 693,792.80, 957,473.43 and 391,986.80

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Solution

The fourth proportional to 693,792.80, 957,473.43 and 391,986.80 is: 540,964.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,792.80 : 957,473.43 = 391,986.80 : x
  2. Step 2: Convert to fraction form
    693,792.80/957,473.43 = 391,986.80/x
  3. Step 3: Cross multiply
    693,792.80x = 957,473.43 × 391,986.80
  4. Step 4: Simplify right side
    693,792.80x = 375,316,945,910.72
  5. Step 5: Solve for x
    x = 375,316,945,910.72/693,792.80
  6. Step 6: Final answer
    x = 540,964.03

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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.