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Finding the Fourth Proportional to 118,415.53, 163,392.82 and 70,666.03

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Solution

The fourth proportional to 118,415.53, 163,392.82 and 70,666.03 is: 97,506.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,415.53 : 163,392.82 = 70,666.03 : x
  2. Step 2: Convert to fraction form
    118,415.53/163,392.82 = 70,666.03/x
  3. Step 3: Cross multiply
    118,415.53x = 163,392.82 × 70,666.03
  4. Step 4: Simplify right side
    118,415.53x = 11,546,321,919.90
  5. Step 5: Solve for x
    x = 11,546,321,919.90/118,415.53
  6. Step 6: Final answer
    x = 97,506.82

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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.