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Finding the Fourth Proportional to 519,136.85, 776,955.68 and 519,136.85

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Solution

The fourth proportional to 519,136.85, 776,955.68 and 519,136.85 is: 776,955.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,136.85 : 776,955.68 = 519,136.85 : x
  2. Step 2: Convert to fraction form
    519,136.85/776,955.68 = 519,136.85/x
  3. Step 3: Cross multiply
    519,136.85x = 776,955.68 × 519,136.85
  4. Step 4: Simplify right side
    519,136.85x = 403,346,321,709.12
  5. Step 5: Solve for x
    x = 403,346,321,709.12/519,136.85
  6. Step 6: Final answer
    x = 776,955.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.