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Finding the Fourth Proportional to 627,980.40, 866,308.24 and 373,151.20

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Solution

The fourth proportional to 627,980.40, 866,308.24 and 373,151.20 is: 514,767.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,980.40 : 866,308.24 = 373,151.20 : x
  2. Step 2: Convert to fraction form
    627,980.40/866,308.24 = 373,151.20/x
  3. Step 3: Cross multiply
    627,980.40x = 866,308.24 × 373,151.20
  4. Step 4: Simplify right side
    627,980.40x = 323,263,959,325.89
  5. Step 5: Solve for x
    x = 323,263,959,325.89/627,980.40
  6. Step 6: Final answer
    x = 514,767.59

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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.