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Finding the Fourth Proportional to 82,970.90, 114,508.67 and 50,724.40

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Solution

The fourth proportional to 82,970.90, 114,508.67 and 50,724.40 is: 70,005.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,970.90 : 114,508.67 = 50,724.40 : x
  2. Step 2: Convert to fraction form
    82,970.90/114,508.67 = 50,724.40/x
  3. Step 3: Cross multiply
    82,970.90x = 114,508.67 × 50,724.40
  4. Step 4: Simplify right side
    82,970.90x = 5,808,383,040.65
  5. Step 5: Solve for x
    x = 5,808,383,040.65/82,970.90
  6. Step 6: Final answer
    x = 70,005.06

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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.