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Finding the Fourth Proportional to 201,798.73, 278,482.57 and 111,154.95

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Solution

The fourth proportional to 201,798.73, 278,482.57 and 111,154.95 is: 153,394.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,798.73 : 278,482.57 = 111,154.95 : x
  2. Step 2: Convert to fraction form
    201,798.73/278,482.57 = 111,154.95/x
  3. Step 3: Cross multiply
    201,798.73x = 278,482.57 × 111,154.95
  4. Step 4: Simplify right side
    201,798.73x = 30,954,716,144.22
  5. Step 5: Solve for x
    x = 30,954,716,144.22/201,798.73
  6. Step 6: Final answer
    x = 153,394.01

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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.