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Finding the Fourth Proportional to 135,031.40, 201,963.90 and 114,036.20

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Solution

The fourth proportional to 135,031.40, 201,963.90 and 114,036.20 is: 170,561.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,031.40 : 201,963.90 = 114,036.20 : x
  2. Step 2: Convert to fraction form
    135,031.40/201,963.90 = 114,036.20/x
  3. Step 3: Cross multiply
    135,031.40x = 201,963.90 × 114,036.20
  4. Step 4: Simplify right side
    135,031.40x = 23,031,195,693.18
  5. Step 5: Solve for x
    x = 23,031,195,693.18/135,031.40
  6. Step 6: Final answer
    x = 170,561.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.