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Finding the Fourth Proportional to 713,221.38, 984,346.43 and 441,376.83

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Solution

The fourth proportional to 713,221.38, 984,346.43 and 441,376.83 is: 609,162.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,221.38 : 984,346.43 = 441,376.83 : x
  2. Step 2: Convert to fraction form
    713,221.38/984,346.43 = 441,376.83/x
  3. Step 3: Cross multiply
    713,221.38x = 984,346.43 × 441,376.83
  4. Step 4: Simplify right side
    713,221.38x = 434,467,704,688.33
  5. Step 5: Solve for x
    x = 434,467,704,688.33/713,221.38
  6. Step 6: Final answer
    x = 609,162.48

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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.