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Finding the Fourth Proportional to 627,581.40, 866,071.10 and 341,101.40

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Solution

The fourth proportional to 627,581.40, 866,071.10 and 341,101.40 is: 470,724.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,581.40 : 866,071.10 = 341,101.40 : x
  2. Step 2: Convert to fraction form
    627,581.40/866,071.10 = 341,101.40/x
  3. Step 3: Cross multiply
    627,581.40x = 866,071.10 × 341,101.40
  4. Step 4: Simplify right side
    627,581.40x = 295,418,064,709.54
  5. Step 5: Solve for x
    x = 295,418,064,709.54/627,581.40
  6. Step 6: Final answer
    x = 470,724.70

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Half scale
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Double scale
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Similar ratio
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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.