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Finding the Fourth Proportional to 76,018.88, 104,935.32 and 68,047.04

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Solution

The fourth proportional to 76,018.88, 104,935.32 and 68,047.04 is: 93,931.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,018.88 : 104,935.32 = 68,047.04 : x
  2. Step 2: Convert to fraction form
    76,018.88/104,935.32 = 68,047.04/x
  3. Step 3: Cross multiply
    76,018.88x = 104,935.32 × 68,047.04
  4. Step 4: Simplify right side
    76,018.88x = 7,140,537,917.45
  5. Step 5: Solve for x
    x = 7,140,537,917.45/76,018.88
  6. Step 6: Final answer
    x = 93,931.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.