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Finding the Fourth Proportional to 153,939.60, 230,909.40 and 104,043.60

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Solution

The fourth proportional to 153,939.60, 230,909.40 and 104,043.60 is: 156,065.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,939.60 : 230,909.40 = 104,043.60 : x
  2. Step 2: Convert to fraction form
    153,939.60/230,909.40 = 104,043.60/x
  3. Step 3: Cross multiply
    153,939.60x = 230,909.40 × 104,043.60
  4. Step 4: Simplify right side
    153,939.60x = 24,024,645,249.84
  5. Step 5: Solve for x
    x = 24,024,645,249.84/153,939.60
  6. Step 6: Final answer
    x = 156,065.40

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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.