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Finding the Fourth Proportional to 118,411.20, 177,530.40 and 48,254.40

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Solution

The fourth proportional to 118,411.20, 177,530.40 and 48,254.40 is: 72,346.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,411.20 : 177,530.40 = 48,254.40 : x
  2. Step 2: Convert to fraction form
    118,411.20/177,530.40 = 48,254.40/x
  3. Step 3: Cross multiply
    118,411.20x = 177,530.40 × 48,254.40
  4. Step 4: Simplify right side
    118,411.20x = 8,566,622,933.76
  5. Step 5: Solve for x
    x = 8,566,622,933.76/118,411.20
  6. Step 6: Final answer
    x = 72,346.39

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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.