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Finding the Fourth Proportional to 627,968.40, 866,291.70 and 373,139.16

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Solution

The fourth proportional to 627,968.40, 866,291.70 and 373,139.16 is: 514,750.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,968.40 : 866,291.70 = 373,139.16 : x
  2. Step 2: Convert to fraction form
    627,968.40/866,291.70 = 373,139.16/x
  3. Step 3: Cross multiply
    627,968.40x = 866,291.70 × 373,139.16
  4. Step 4: Simplify right side
    627,968.40x = 323,247,357,252.97
  5. Step 5: Solve for x
    x = 323,247,357,252.97/627,968.40
  6. Step 6: Final answer
    x = 514,750.99

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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.