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Finding the Fourth Proportional to 201,753.99, 278,420.49 and 111,109.17

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Solution

The fourth proportional to 201,753.99, 278,420.49 and 111,109.17 is: 153,330.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,753.99 : 278,420.49 = 111,109.17 : x
  2. Step 2: Convert to fraction form
    201,753.99/278,420.49 = 111,109.17/x
  3. Step 3: Cross multiply
    201,753.99x = 278,420.49 × 111,109.17
  4. Step 4: Simplify right side
    201,753.99x = 30,935,069,032.85
  5. Step 5: Solve for x
    x = 30,935,069,032.85/201,753.99
  6. Step 6: Final answer
    x = 153,330.64

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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.