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Finding the Fourth Proportional to 713,457.85, 984,560.61 and 391,170.73

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Solution

The fourth proportional to 713,457.85, 984,560.61 and 391,170.73 is: 539,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,457.85 : 984,560.61 = 391,170.73 : x
  2. Step 2: Convert to fraction form
    713,457.85/984,560.61 = 391,170.73/x
  3. Step 3: Cross multiply
    713,457.85x = 984,560.61 × 391,170.73
  4. Step 4: Simplify right side
    713,457.85x = 385,131,292,542.95
  5. Step 5: Solve for x
    x = 385,131,292,542.95/713,457.85
  6. Step 6: Final answer
    x = 539,809.45

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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.