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Finding the Fourth Proportional to 118,396.71, 163,390.67 and 70,677.75

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Solution

The fourth proportional to 118,396.71, 163,390.67 and 70,677.75 is: 97,537.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,396.71 : 163,390.67 = 70,677.75 : x
  2. Step 2: Convert to fraction form
    118,396.71/163,390.67 = 70,677.75/x
  3. Step 3: Cross multiply
    118,396.71x = 163,390.67 × 70,677.75
  4. Step 4: Simplify right side
    118,396.71x = 11,548,084,926.59
  5. Step 5: Solve for x
    x = 11,548,084,926.59/118,396.71
  6. Step 6: Final answer
    x = 97,537.21

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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.