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Finding the Fourth Proportional to 770,173.85, 1,062,846.86 and 425,991.71

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Solution

The fourth proportional to 770,173.85, 1,062,846.86 and 425,991.71 is: 587,872.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,173.85 : 1,062,846.86 = 425,991.71 : x
  2. Step 2: Convert to fraction form
    770,173.85/1,062,846.86 = 425,991.71/x
  3. Step 3: Cross multiply
    770,173.85x = 1,062,846.86 × 425,991.71
  4. Step 4: Simplify right side
    770,173.85x = 452,763,943,915.34
  5. Step 5: Solve for x
    x = 452,763,943,915.34/770,173.85
  6. Step 6: Final answer
    x = 587,872.40

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Double scale
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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.