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Finding the Fourth Proportional to 118,312.20, 177,122.70 and 105,870.60

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Solution

The fourth proportional to 118,312.20, 177,122.70 and 105,870.60 is: 158,496.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,312.20 : 177,122.70 = 105,870.60 : x
  2. Step 2: Convert to fraction form
    118,312.20/177,122.70 = 105,870.60/x
  3. Step 3: Cross multiply
    118,312.20x = 177,122.70 × 105,870.60
  4. Step 4: Simplify right side
    118,312.20x = 18,752,086,522.62
  5. Step 5: Solve for x
    x = 18,752,086,522.62/118,312.20
  6. Step 6: Final answer
    x = 158,496.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.