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Finding the Fourth Proportional to 118,487.70, 163,516.14 and 70,768.58

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Solution

The fourth proportional to 118,487.70, 163,516.14 and 70,768.58 is: 97,662.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,487.70 : 163,516.14 = 70,768.58 : x
  2. Step 2: Convert to fraction form
    118,487.70/163,516.14 = 70,768.58/x
  3. Step 3: Cross multiply
    118,487.70x = 163,516.14 × 70,768.58
  4. Step 4: Simplify right side
    118,487.70x = 11,571,804,217.30
  5. Step 5: Solve for x
    x = 11,571,804,217.30/118,487.70
  6. Step 6: Final answer
    x = 97,662.49

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1.5x scale

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.