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Finding the Fourth Proportional to 209,735.20, 314,602.80 and 188,999.20

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Solution

The fourth proportional to 209,735.20, 314,602.80 and 188,999.20 is: 283,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,735.20 : 314,602.80 = 188,999.20 : x
  2. Step 2: Convert to fraction form
    209,735.20/314,602.80 = 188,999.20/x
  3. Step 3: Cross multiply
    209,735.20x = 314,602.80 × 188,999.20
  4. Step 4: Simplify right side
    209,735.20x = 59,459,677,517.76
  5. Step 5: Solve for x
    x = 59,459,677,517.76/209,735.20
  6. Step 6: Final answer
    x = 283,498.80

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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.