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Finding the Fourth Proportional to 636,886.56, 955,295.28 and 193,620

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Solution

The fourth proportional to 636,886.56, 955,295.28 and 193,620 is: 290,419.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,886.56 : 955,295.28 = 193,620 : x
  2. Step 2: Convert to fraction form
    636,886.56/955,295.28 = 193,620/x
  3. Step 3: Cross multiply
    636,886.56x = 955,295.28 × 193,620
  4. Step 4: Simplify right side
    636,886.56x = 184,964,272,113.60
  5. Step 5: Solve for x
    x = 184,964,272,113.60/636,886.56
  6. Step 6: Final answer
    x = 290,419.49

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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.