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Finding the Fourth Proportional to 201,774.68, 278,445.62 and 111,139.13

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Solution

The fourth proportional to 201,774.68, 278,445.62 and 111,139.13 is: 153,370.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,774.68 : 278,445.62 = 111,139.13 : x
  2. Step 2: Convert to fraction form
    201,774.68/278,445.62 = 111,139.13/x
  3. Step 3: Cross multiply
    201,774.68x = 278,445.62 × 111,139.13
  4. Step 4: Simplify right side
    201,774.68x = 30,946,202,011.19
  5. Step 5: Solve for x
    x = 30,946,202,011.19/201,774.68
  6. Step 6: Final answer
    x = 153,370.10

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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.