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Finding the Fourth Proportional to 62,811.61, 86,679 and 34,516.69

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Solution

The fourth proportional to 62,811.61, 86,679 and 34,516.69 is: 47,632.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,811.61 : 86,679 = 34,516.69 : x
  2. Step 2: Convert to fraction form
    62,811.61/86,679 = 34,516.69/x
  3. Step 3: Cross multiply
    62,811.61x = 86,679 × 34,516.69
  4. Step 4: Simplify right side
    62,811.61x = 2,991,872,172.51
  5. Step 5: Solve for x
    x = 2,991,872,172.51/62,811.61
  6. Step 6: Final answer
    x = 47,632.47

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1.5x scale

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.