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Finding the Fourth Proportional to 639,305.34, 959,148.81 and 190,041.18

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Solution

The fourth proportional to 639,305.34, 959,148.81 and 190,041.18 is: 285,118.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,305.34 : 959,148.81 = 190,041.18 : x
  2. Step 2: Convert to fraction form
    639,305.34/959,148.81 = 190,041.18/x
  3. Step 3: Cross multiply
    639,305.34x = 959,148.81 × 190,041.18
  4. Step 4: Simplify right side
    639,305.34x = 182,277,771,648.00
  5. Step 5: Solve for x
    x = 182,277,771,648.00/639,305.34
  6. Step 6: Final answer
    x = 285,118.49

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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.