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Finding the Fourth Proportional to 201,700.10, 278,343.82 and 111,054.20

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Solution

The fourth proportional to 201,700.10, 278,343.82 and 111,054.20 is: 153,253.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,700.10 : 278,343.82 = 111,054.20 : x
  2. Step 2: Convert to fraction form
    201,700.10/278,343.82 = 111,054.20/x
  3. Step 3: Cross multiply
    201,700.10x = 278,343.82 × 111,054.20
  4. Step 4: Simplify right side
    201,700.10x = 30,911,250,255.04
  5. Step 5: Solve for x
    x = 30,911,250,255.04/201,700.10
  6. Step 6: Final answer
    x = 153,253.52

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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.