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Finding the Fourth Proportional to 584,212.80, 819,078.90 and 584,212.80

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Solution

The fourth proportional to 584,212.80, 819,078.90 and 584,212.80 is: 819,078.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,212.80 : 819,078.90 = 584,212.80 : x
  2. Step 2: Convert to fraction form
    584,212.80/819,078.90 = 584,212.80/x
  3. Step 3: Cross multiply
    584,212.80x = 819,078.90 × 584,212.80
  4. Step 4: Simplify right side
    584,212.80x = 478,516,377,589.92
  5. Step 5: Solve for x
    x = 478,516,377,589.92/584,212.80
  6. Step 6: Final answer
    x = 819,078.90

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.