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Finding the Fourth Proportional to 627,386.50, 865,798.85 and 340,906.58

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Solution

The fourth proportional to 627,386.50, 865,798.85 and 340,906.58 is: 470,454.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,386.50 : 865,798.85 = 340,906.58 : x
  2. Step 2: Convert to fraction form
    627,386.50/865,798.85 = 340,906.58/x
  3. Step 3: Cross multiply
    627,386.50x = 865,798.85 × 340,906.58
  4. Step 4: Simplify right side
    627,386.50x = 295,156,525,381.40
  5. Step 5: Solve for x
    x = 295,156,525,381.40/627,386.50
  6. Step 6: Final answer
    x = 470,454.06

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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.