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Finding the Fourth Proportional to 118,246.80, 163,174.59 and 64,531.38

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Solution

The fourth proportional to 118,246.80, 163,174.59 and 64,531.38 is: 89,050.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,246.80 : 163,174.59 = 64,531.38 : x
  2. Step 2: Convert to fraction form
    118,246.80/163,174.59 = 64,531.38/x
  3. Step 3: Cross multiply
    118,246.80x = 163,174.59 × 64,531.38
  4. Step 4: Simplify right side
    118,246.80x = 10,529,881,473.63
  5. Step 5: Solve for x
    x = 10,529,881,473.63/118,246.80
  6. Step 6: Final answer
    x = 89,050.03

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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.