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Finding the Fourth Proportional to 522,858.10, 784,805.55 and 256,918.90

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Solution

The fourth proportional to 522,858.10, 784,805.55 and 256,918.90 is: 385,633.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,858.10 : 784,805.55 = 256,918.90 : x
  2. Step 2: Convert to fraction form
    522,858.10/784,805.55 = 256,918.90/x
  3. Step 3: Cross multiply
    522,858.10x = 784,805.55 × 256,918.90
  4. Step 4: Simplify right side
    522,858.10x = 201,631,378,619.90
  5. Step 5: Solve for x
    x = 201,631,378,619.90/522,858.10
  6. Step 6: Final answer
    x = 385,633.08

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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.