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Finding the Fourth Proportional to 572,367.11, 789,827.10 and 317,698.25

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Solution

The fourth proportional to 572,367.11, 789,827.10 and 317,698.25 is: 438,401.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,367.11 : 789,827.10 = 317,698.25 : x
  2. Step 2: Convert to fraction form
    572,367.11/789,827.10 = 317,698.25/x
  3. Step 3: Cross multiply
    572,367.11x = 789,827.10 × 317,698.25
  4. Step 4: Simplify right side
    572,367.11x = 250,926,687,472.58
  5. Step 5: Solve for x
    x = 250,926,687,472.58/572,367.11
  6. Step 6: Final answer
    x = 438,401.65

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Half scale
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Double scale
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Similar ratio
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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.