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Finding the Fourth Proportional to 86,758.50, 119,726.91 and 47,014.50

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Solution

The fourth proportional to 86,758.50, 119,726.91 and 47,014.50 is: 64,880.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,758.50 : 119,726.91 = 47,014.50 : x
  2. Step 2: Convert to fraction form
    86,758.50/119,726.91 = 47,014.50/x
  3. Step 3: Cross multiply
    86,758.50x = 119,726.91 × 47,014.50
  4. Step 4: Simplify right side
    86,758.50x = 5,628,900,810.20
  5. Step 5: Solve for x
    x = 5,628,900,810.20/86,758.50
  6. Step 6: Final answer
    x = 64,880.11

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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.