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Finding the Fourth Proportional to 572,369.11, 789,829.86 and 317,700.25

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Solution

The fourth proportional to 572,369.11, 789,829.86 and 317,700.25 is: 438,404.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,369.11 : 789,829.86 = 317,700.25 : x
  2. Step 2: Convert to fraction form
    572,369.11/789,829.86 = 317,700.25/x
  3. Step 3: Cross multiply
    572,369.11x = 789,829.86 × 317,700.25
  4. Step 4: Simplify right side
    572,369.11x = 250,929,143,979.47
  5. Step 5: Solve for x
    x = 250,929,143,979.47/572,369.11
  6. Step 6: Final answer
    x = 438,404.41

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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.