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Finding the Fourth Proportional to 354,705.40, 532,062.78 and 118,048.12

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Solution

The fourth proportional to 354,705.40, 532,062.78 and 118,048.12 is: 177,073.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,705.40 : 532,062.78 = 118,048.12 : x
  2. Step 2: Convert to fraction form
    354,705.40/532,062.78 = 118,048.12/x
  3. Step 3: Cross multiply
    354,705.40x = 532,062.78 × 118,048.12
  4. Step 4: Simplify right side
    354,705.40x = 62,809,010,900.97
  5. Step 5: Solve for x
    x = 62,809,010,900.97/354,705.40
  6. Step 6: Final answer
    x = 177,073.74

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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.