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Finding the Fourth Proportional to 661,505.70, 992,258.55 and 451,553.70

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Solution

The fourth proportional to 661,505.70, 992,258.55 and 451,553.70 is: 677,330.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,505.70 : 992,258.55 = 451,553.70 : x
  2. Step 2: Convert to fraction form
    661,505.70/992,258.55 = 451,553.70/x
  3. Step 3: Cross multiply
    661,505.70x = 992,258.55 × 451,553.70
  4. Step 4: Simplify right side
    661,505.70x = 448,058,019,609.14
  5. Step 5: Solve for x
    x = 448,058,019,609.14/661,505.70
  6. Step 6: Final answer
    x = 677,330.55

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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.