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Finding the Fourth Proportional to 538,906.40, 808,359.60 and 223,258.40

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Solution

The fourth proportional to 538,906.40, 808,359.60 and 223,258.40 is: 334,887.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,906.40 : 808,359.60 = 223,258.40 : x
  2. Step 2: Convert to fraction form
    538,906.40/808,359.60 = 223,258.40/x
  3. Step 3: Cross multiply
    538,906.40x = 808,359.60 × 223,258.40
  4. Step 4: Simplify right side
    538,906.40x = 180,473,070,920.64
  5. Step 5: Solve for x
    x = 180,473,070,920.64/538,906.40
  6. Step 6: Final answer
    x = 334,887.60

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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.