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Finding the Fourth Proportional to 415,155.58, 622,930.20 and 247,008.08

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Solution

The fourth proportional to 415,155.58, 622,930.20 and 247,008.08 is: 370,629.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,155.58 : 622,930.20 = 247,008.08 : x
  2. Step 2: Convert to fraction form
    415,155.58/622,930.20 = 247,008.08/x
  3. Step 3: Cross multiply
    415,155.58x = 622,930.20 × 247,008.08
  4. Step 4: Simplify right side
    415,155.58x = 153,868,793,307.06
  5. Step 5: Solve for x
    x = 153,868,793,307.06/415,155.58
  6. Step 6: Final answer
    x = 370,629.23

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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.