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Finding the Fourth Proportional to 74,999.20, 112,369.20 and 63,335.20

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Solution

The fourth proportional to 74,999.20, 112,369.20 and 63,335.20 is: 94,893.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,999.20 : 112,369.20 = 63,335.20 : x
  2. Step 2: Convert to fraction form
    74,999.20/112,369.20 = 63,335.20/x
  3. Step 3: Cross multiply
    74,999.20x = 112,369.20 × 63,335.20
  4. Step 4: Simplify right side
    74,999.20x = 7,116,925,755.84
  5. Step 5: Solve for x
    x = 7,116,925,755.84/74,999.20
  6. Step 6: Final answer
    x = 94,893.36

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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.