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Finding the Fourth Proportional to 258,844.60, 388,266.90 and 153,609.40

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Solution

The fourth proportional to 258,844.60, 388,266.90 and 153,609.40 is: 230,414.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,844.60 : 388,266.90 = 153,609.40 : x
  2. Step 2: Convert to fraction form
    258,844.60/388,266.90 = 153,609.40/x
  3. Step 3: Cross multiply
    258,844.60x = 388,266.90 × 153,609.40
  4. Step 4: Simplify right side
    258,844.60x = 59,641,445,548.86
  5. Step 5: Solve for x
    x = 59,641,445,548.86/258,844.60
  6. Step 6: Final answer
    x = 230,414.10

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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.