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Finding the Fourth Proportional to 638,454.76, 957,696.70 and 189,167.20

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Solution

The fourth proportional to 638,454.76, 957,696.70 and 189,167.20 is: 283,755.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,454.76 : 957,696.70 = 189,167.20 : x
  2. Step 2: Convert to fraction form
    638,454.76/957,696.70 = 189,167.20/x
  3. Step 3: Cross multiply
    638,454.76x = 957,696.70 × 189,167.20
  4. Step 4: Simplify right side
    638,454.76x = 181,164,803,188.24
  5. Step 5: Solve for x
    x = 181,164,803,188.24/638,454.76
  6. Step 6: Final answer
    x = 283,755.11

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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.