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Finding the Fourth Proportional to 118,281.96, 177,425.43 and 42,385.44

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Solution

The fourth proportional to 118,281.96, 177,425.43 and 42,385.44 is: 63,579.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,281.96 : 177,425.43 = 42,385.44 : x
  2. Step 2: Convert to fraction form
    118,281.96/177,425.43 = 42,385.44/x
  3. Step 3: Cross multiply
    118,281.96x = 177,425.43 × 42,385.44
  4. Step 4: Simplify right side
    118,281.96x = 7,520,254,917.74
  5. Step 5: Solve for x
    x = 7,520,254,917.74/118,281.96
  6. Step 6: Final answer
    x = 63,579.05

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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.