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Finding the Fourth Proportional to 207,090.40, 309,944.40 and 144,882.40

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Solution

The fourth proportional to 207,090.40, 309,944.40 and 144,882.40 is: 216,840.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,090.40 : 309,944.40 = 144,882.40 : x
  2. Step 2: Convert to fraction form
    207,090.40/309,944.40 = 144,882.40/x
  3. Step 3: Cross multiply
    207,090.40x = 309,944.40 × 144,882.40
  4. Step 4: Simplify right side
    207,090.40x = 44,905,488,538.56
  5. Step 5: Solve for x
    x = 44,905,488,538.56/207,090.40
  6. Step 6: Final answer
    x = 216,840.03

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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.