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Finding the Fourth Proportional to 524,827.30, 786,074.55 and 431,515.30

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Solution

The fourth proportional to 524,827.30, 786,074.55 and 431,515.30 is: 646,313.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,827.30 : 786,074.55 = 431,515.30 : x
  2. Step 2: Convert to fraction form
    524,827.30/786,074.55 = 431,515.30/x
  3. Step 3: Cross multiply
    524,827.30x = 786,074.55 × 431,515.30
  4. Step 4: Simplify right side
    524,827.30x = 339,203,195,265.62
  5. Step 5: Solve for x
    x = 339,203,195,265.62/524,827.30
  6. Step 6: Final answer
    x = 646,313.93

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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.