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Finding the Fourth Proportional to 627,277.90, 865,638.84 and 340,800.34

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Solution

The fourth proportional to 627,277.90, 865,638.84 and 340,800.34 is: 470,301.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,277.90 : 865,638.84 = 340,800.34 : x
  2. Step 2: Convert to fraction form
    627,277.90/865,638.84 = 340,800.34/x
  3. Step 3: Cross multiply
    627,277.90x = 865,638.84 × 340,800.34
  4. Step 4: Simplify right side
    627,277.90x = 295,010,010,989.21
  5. Step 5: Solve for x
    x = 295,010,010,989.21/627,277.90
  6. Step 6: Final answer
    x = 470,301.94

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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.