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Finding the Fourth Proportional to 534,281.40, 801,422.10 and 218,633.40

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Solution

The fourth proportional to 534,281.40, 801,422.10 and 218,633.40 is: 327,950.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,281.40 : 801,422.10 = 218,633.40 : x
  2. Step 2: Convert to fraction form
    534,281.40/801,422.10 = 218,633.40/x
  3. Step 3: Cross multiply
    534,281.40x = 801,422.10 × 218,633.40
  4. Step 4: Simplify right side
    534,281.40x = 175,217,638,558.14
  5. Step 5: Solve for x
    x = 175,217,638,558.14/534,281.40
  6. Step 6: Final answer
    x = 327,950.10

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.