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Finding the Fourth Proportional to 770,937.95, 1,063,885.15 and 431,408.99

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Solution

The fourth proportional to 770,937.95, 1,063,885.15 and 431,408.99 is: 595,339.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,937.95 : 1,063,885.15 = 431,408.99 : x
  2. Step 2: Convert to fraction form
    770,937.95/1,063,885.15 = 431,408.99/x
  3. Step 3: Cross multiply
    770,937.95x = 1,063,885.15 × 431,408.99
  4. Step 4: Simplify right side
    770,937.95x = 458,969,618,037.50
  5. Step 5: Solve for x
    x = 458,969,618,037.50/770,937.95
  6. Step 6: Final answer
    x = 595,339.25

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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.