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Finding the Fourth Proportional to 118,311.70, 163,270.44 and 64,597.18

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Solution

The fourth proportional to 118,311.70, 163,270.44 and 64,597.18 is: 89,144.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,311.70 : 163,270.44 = 64,597.18 : x
  2. Step 2: Convert to fraction form
    118,311.70/163,270.44 = 64,597.18/x
  3. Step 3: Cross multiply
    118,311.70x = 163,270.44 × 64,597.18
  4. Step 4: Simplify right side
    118,311.70x = 10,546,810,001.36
  5. Step 5: Solve for x
    x = 10,546,810,001.36/118,311.70
  6. Step 6: Final answer
    x = 89,144.27

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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.