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Finding the Fourth Proportional to 76,013.16, 104,927.76 and 68,041.60

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Solution

The fourth proportional to 76,013.16, 104,927.76 and 68,041.60 is: 93,923.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,013.16 : 104,927.76 = 68,041.60 : x
  2. Step 2: Convert to fraction form
    76,013.16/104,927.76 = 68,041.60/x
  3. Step 3: Cross multiply
    76,013.16x = 104,927.76 × 68,041.60
  4. Step 4: Simplify right side
    76,013.16x = 7,139,452,674.82
  5. Step 5: Solve for x
    x = 7,139,452,674.82/76,013.16
  6. Step 6: Final answer
    x = 93,923.90

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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.