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Finding the Fourth Proportional to 627,381.96, 865,785.22 and 340,902.92

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Solution

The fourth proportional to 627,381.96, 865,785.22 and 340,902.92 is: 470,445.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,381.96 : 865,785.22 = 340,902.92 : x
  2. Step 2: Convert to fraction form
    627,381.96/865,785.22 = 340,902.92/x
  3. Step 3: Cross multiply
    627,381.96x = 865,785.22 × 340,902.92
  4. Step 4: Simplify right side
    627,381.96x = 295,148,709,590.84
  5. Step 5: Solve for x
    x = 295,148,709,590.84/627,381.96
  6. Step 6: Final answer
    x = 470,445.01

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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.