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Finding the Fourth Proportional to 118,038.70, 162,888.26 and 67,051.28

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Solution

The fourth proportional to 118,038.70, 162,888.26 and 67,051.28 is: 92,527.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,038.70 : 162,888.26 = 67,051.28 : x
  2. Step 2: Convert to fraction form
    118,038.70/162,888.26 = 67,051.28/x
  3. Step 3: Cross multiply
    118,038.70x = 162,888.26 × 67,051.28
  4. Step 4: Simplify right side
    118,038.70x = 10,921,866,329.97
  5. Step 5: Solve for x
    x = 10,921,866,329.97/118,038.70
  6. Step 6: Final answer
    x = 92,527.84

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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.