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Finding the Fourth Proportional to 201,685.80, 278,315.85 and 111,024.06

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Solution

The fourth proportional to 201,685.80, 278,315.85 and 111,024.06 is: 153,207.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,685.80 : 278,315.85 = 111,024.06 : x
  2. Step 2: Convert to fraction form
    201,685.80/278,315.85 = 111,024.06/x
  3. Step 3: Cross multiply
    201,685.80x = 278,315.85 × 111,024.06
  4. Step 4: Simplify right side
    201,685.80x = 30,899,755,629.35
  5. Step 5: Solve for x
    x = 30,899,755,629.35/201,685.80
  6. Step 6: Final answer
    x = 153,207.39

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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.