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Finding the Fourth Proportional to 619,065.21, 928,406.22 and 299,018.28

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Solution

The fourth proportional to 619,065.21, 928,406.22 and 299,018.28 is: 448,434.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,065.21 : 928,406.22 = 299,018.28 : x
  2. Step 2: Convert to fraction form
    619,065.21/928,406.22 = 299,018.28/x
  3. Step 3: Cross multiply
    619,065.21x = 928,406.22 × 299,018.28
  4. Step 4: Simplify right side
    619,065.21x = 277,610,431,045.70
  5. Step 5: Solve for x
    x = 277,610,431,045.70/619,065.21
  6. Step 6: Final answer
    x = 448,434.88

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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.