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Finding the Fourth Proportional to 118,508.58, 163,538.70 and 70,113.01

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Solution

The fourth proportional to 118,508.58, 163,538.70 and 70,113.01 is: 96,754.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,508.58 : 163,538.70 = 70,113.01 : x
  2. Step 2: Convert to fraction form
    118,508.58/163,538.70 = 70,113.01/x
  3. Step 3: Cross multiply
    118,508.58x = 163,538.70 × 70,113.01
  4. Step 4: Simplify right side
    118,508.58x = 11,466,190,274.92
  5. Step 5: Solve for x
    x = 11,466,190,274.92/118,508.58
  6. Step 6: Final answer
    x = 96,754.09

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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.