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Finding the Fourth Proportional to 691,101.50, 953,797.68 and 385,205.81

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Solution

The fourth proportional to 691,101.50, 953,797.68 and 385,205.81 is: 531,627.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,101.50 : 953,797.68 = 385,205.81 : x
  2. Step 2: Convert to fraction form
    691,101.50/953,797.68 = 385,205.81/x
  3. Step 3: Cross multiply
    691,101.50x = 953,797.68 × 385,205.81
  4. Step 4: Simplify right side
    691,101.50x = 367,408,403,131.53
  5. Step 5: Solve for x
    x = 367,408,403,131.53/691,101.50
  6. Step 6: Final answer
    x = 531,627.27

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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.