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Finding the Fourth Proportional to 624,243.60, 936,365.40 and 340,808.40

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Solution

The fourth proportional to 624,243.60, 936,365.40 and 340,808.40 is: 511,212.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,243.60 : 936,365.40 = 340,808.40 : x
  2. Step 2: Convert to fraction form
    624,243.60/936,365.40 = 340,808.40/x
  3. Step 3: Cross multiply
    624,243.60x = 936,365.40 × 340,808.40
  4. Step 4: Simplify right side
    624,243.60x = 319,121,193,789.36
  5. Step 5: Solve for x
    x = 319,121,193,789.36/624,243.60
  6. Step 6: Final answer
    x = 511,212.60

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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.