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Finding the Fourth Proportional to 639,163.80, 958,518.90 and 283,541.40

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Solution

The fourth proportional to 639,163.80, 958,518.90 and 283,541.40 is: 425,211.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,163.80 : 958,518.90 = 283,541.40 : x
  2. Step 2: Convert to fraction form
    639,163.80/958,518.90 = 283,541.40/x
  3. Step 3: Cross multiply
    639,163.80x = 958,518.90 × 283,541.40
  4. Step 4: Simplify right side
    639,163.80x = 271,779,790,832.46
  5. Step 5: Solve for x
    x = 271,779,790,832.46/639,163.80
  6. Step 6: Final answer
    x = 425,211.49

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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.