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Finding the Fourth Proportional to 713,416.23, 984,514.16 and 391,119.41

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Solution

The fourth proportional to 713,416.23, 984,514.16 and 391,119.41 is: 539,744.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,416.23 : 984,514.16 = 391,119.41 : x
  2. Step 2: Convert to fraction form
    713,416.23/984,514.16 = 391,119.41/x
  3. Step 3: Cross multiply
    713,416.23x = 984,514.16 × 391,119.41
  4. Step 4: Simplify right side
    713,416.23x = 385,062,597,395.85
  5. Step 5: Solve for x
    x = 385,062,597,395.85/713,416.23
  6. Step 6: Final answer
    x = 539,744.66

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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.