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Finding the Fourth Proportional to 354,628.20, 532,015.20 and 118,140.60

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Solution

The fourth proportional to 354,628.20, 532,015.20 and 118,140.60 is: 177,235.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,628.20 : 532,015.20 = 118,140.60 : x
  2. Step 2: Convert to fraction form
    354,628.20/532,015.20 = 118,140.60/x
  3. Step 3: Cross multiply
    354,628.20x = 532,015.20 × 118,140.60
  4. Step 4: Simplify right side
    354,628.20x = 62,852,594,937.12
  5. Step 5: Solve for x
    x = 62,852,594,937.12/354,628.20
  6. Step 6: Final answer
    x = 177,235.19

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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.