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Finding the Fourth Proportional to 492,689.25, 739,033.88 and 118,712.25

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Solution

The fourth proportional to 492,689.25, 739,033.88 and 118,712.25 is: 178,068.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,689.25 : 739,033.88 = 118,712.25 : x
  2. Step 2: Convert to fraction form
    492,689.25/739,033.88 = 118,712.25/x
  3. Step 3: Cross multiply
    492,689.25x = 739,033.88 × 118,712.25
  4. Step 4: Simplify right side
    492,689.25x = 87,732,374,127.47
  5. Step 5: Solve for x
    x = 87,732,374,127.47/492,689.25
  6. Step 6: Final answer
    x = 178,068.38

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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.