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Finding the Fourth Proportional to 354,699.40, 532,053.78 and 118,042.12

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Solution

The fourth proportional to 354,699.40, 532,053.78 and 118,042.12 is: 177,064.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,699.40 : 532,053.78 = 118,042.12 : x
  2. Step 2: Convert to fraction form
    354,699.40/532,053.78 = 118,042.12/x
  3. Step 3: Cross multiply
    354,699.40x = 532,053.78 × 118,042.12
  4. Step 4: Simplify right side
    354,699.40x = 62,804,756,145.21
  5. Step 5: Solve for x
    x = 62,804,756,145.21/354,699.40
  6. Step 6: Final answer
    x = 177,064.74

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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.