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Finding the Fourth Proportional to 151,911.60, 209,638.01 and 84,843.60

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Solution

The fourth proportional to 151,911.60, 209,638.01 and 84,843.60 is: 117,084.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,911.60 : 209,638.01 = 84,843.60 : x
  2. Step 2: Convert to fraction form
    151,911.60/209,638.01 = 84,843.60/x
  3. Step 3: Cross multiply
    151,911.60x = 209,638.01 × 84,843.60
  4. Step 4: Simplify right side
    151,911.60x = 17,786,443,041.02
  5. Step 5: Solve for x
    x = 17,786,443,041.02/151,911.60
  6. Step 6: Final answer
    x = 117,084.17

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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.