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Finding the Fourth Proportional to 151,886.88, 209,605.65 and 83,902.45

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Solution

The fourth proportional to 151,886.88, 209,605.65 and 83,902.45 is: 115,786.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,886.88 : 209,605.65 = 83,902.45 : x
  2. Step 2: Convert to fraction form
    151,886.88/209,605.65 = 83,902.45/x
  3. Step 3: Cross multiply
    151,886.88x = 209,605.65 × 83,902.45
  4. Step 4: Simplify right side
    151,886.88x = 17,586,427,568.84
  5. Step 5: Solve for x
    x = 17,586,427,568.84/151,886.88
  6. Step 6: Final answer
    x = 115,786.35

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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.