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Finding the Fourth Proportional to 201,798.27, 278,483.54 and 111,154.64

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Solution

The fourth proportional to 201,798.27, 278,483.54 and 111,154.64 is: 153,394.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,798.27 : 278,483.54 = 111,154.64 : x
  2. Step 2: Convert to fraction form
    201,798.27/278,483.54 = 111,154.64/x
  3. Step 3: Cross multiply
    201,798.27x = 278,483.54 × 111,154.64
  4. Step 4: Simplify right side
    201,798.27x = 30,954,735,686.43
  5. Step 5: Solve for x
    x = 30,954,735,686.43/201,798.27
  6. Step 6: Final answer
    x = 153,394.46

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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.