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Finding the Fourth Proportional to 713,636.35, 984,819.45 and 391,348.75

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Solution

The fourth proportional to 713,636.35, 984,819.45 and 391,348.75 is: 540,061.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,636.35 : 984,819.45 = 391,348.75 : x
  2. Step 2: Convert to fraction form
    713,636.35/984,819.45 = 391,348.75/x
  3. Step 3: Cross multiply
    713,636.35x = 984,819.45 × 391,348.75
  4. Step 4: Simplify right side
    713,636.35x = 385,407,858,776.44
  5. Step 5: Solve for x
    x = 385,407,858,776.44/713,636.35
  6. Step 6: Final answer
    x = 540,061.98

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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.