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Finding the Fourth Proportional to 415,068.40, 622,602.60 and 134,585.65

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Solution

The fourth proportional to 415,068.40, 622,602.60 and 134,585.65 is: 201,878.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,068.40 : 622,602.60 = 134,585.65 : x
  2. Step 2: Convert to fraction form
    415,068.40/622,602.60 = 134,585.65/x
  3. Step 3: Cross multiply
    415,068.40x = 622,602.60 × 134,585.65
  4. Step 4: Simplify right side
    415,068.40x = 83,793,375,612.69
  5. Step 5: Solve for x
    x = 83,793,375,612.69/415,068.40
  6. Step 6: Final answer
    x = 201,878.48

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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.