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Finding the Fourth Proportional to 117,847.71, 162,685.46 and 75,430.85

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Solution

The fourth proportional to 117,847.71, 162,685.46 and 75,430.85 is: 104,130.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,847.71 : 162,685.46 = 75,430.85 : x
  2. Step 2: Convert to fraction form
    117,847.71/162,685.46 = 75,430.85/x
  3. Step 3: Cross multiply
    117,847.71x = 162,685.46 × 75,430.85
  4. Step 4: Simplify right side
    117,847.71x = 12,271,501,905.59
  5. Step 5: Solve for x
    x = 12,271,501,905.59/117,847.71
  6. Step 6: Final answer
    x = 104,130.17

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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.