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Finding the Fourth Proportional to 186,855.39, 257,860.77 and 101,972.45

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Solution

The fourth proportional to 186,855.39, 257,860.77 and 101,972.45 is: 140,722.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,855.39 : 257,860.77 = 101,972.45 : x
  2. Step 2: Convert to fraction form
    186,855.39/257,860.77 = 101,972.45/x
  3. Step 3: Cross multiply
    186,855.39x = 257,860.77 × 101,972.45
  4. Step 4: Simplify right side
    186,855.39x = 26,294,694,738.04
  5. Step 5: Solve for x
    x = 26,294,694,738.04/186,855.39
  6. Step 6: Final answer
    x = 140,722.16

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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.