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Finding the Fourth Proportional to 657,665.70, 986,498.55 and 445,089.30

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Solution

The fourth proportional to 657,665.70, 986,498.55 and 445,089.30 is: 667,633.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,665.70 : 986,498.55 = 445,089.30 : x
  2. Step 2: Convert to fraction form
    657,665.70/986,498.55 = 445,089.30/x
  3. Step 3: Cross multiply
    657,665.70x = 986,498.55 × 445,089.30
  4. Step 4: Simplify right side
    657,665.70x = 439,079,949,070.52
  5. Step 5: Solve for x
    x = 439,079,949,070.52/657,665.70
  6. Step 6: Final answer
    x = 667,633.95

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Double scale
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Similar ratio
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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.