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Finding the Fourth Proportional to 627,200.40, 940,109.40 and 346,918.80

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Solution

The fourth proportional to 627,200.40, 940,109.40 and 346,918.80 is: 519,995.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,200.40 : 940,109.40 = 346,918.80 : x
  2. Step 2: Convert to fraction form
    627,200.40/940,109.40 = 346,918.80/x
  3. Step 3: Cross multiply
    627,200.40x = 940,109.40 × 346,918.80
  4. Step 4: Simplify right side
    627,200.40x = 326,141,624,916.72
  5. Step 5: Solve for x
    x = 326,141,624,916.72/627,200.40
  6. Step 6: Final answer
    x = 519,995.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.